Wednesday, June 8, 2016

The LCMS Presidium's Libel

Although I was expelled from the Lutheran Church—Missouri Synod last July, the leadership of that church body continues to malign me in public. Earlier this week a friend forwarded to me an “open letter” from the LCMS “presidium” (i.e., Matthew Harrison, Herbert Mueller, John Wohlrabe, Dan Preus, Scott Murray, Nabil Nour, and Christopher Esget). This letter is a response to another “public letter” by three former members of the synod’s Commission on Constitutional Matters. The former CCM members are troubled by what appears to be Pres. Harrison’s efforts to change the bylaws of the synod so that the president will have more leverage to discipline those he thinks need to be disciplined. In the words of the former members of the CCM: “We are concerned that President Harrison, having initially expressed concerns about the concentration of power in the Office of the President caused by the structural changes adopted by the Synod in 2010, has now abandoned that position and is actively attempting to aggregate even more power in the Office of the President.”

So now, in its letter, the synod presidium has tried to explain why the bylaws dealing with ecclesiastical supervision need to be revised. Here’s how Harrison & Company begin their letter:

What precipitated the need for taking a look at the dispute resolution process as it currently exists in our Bylaws? The suggestion to examine the current Bylaws on dispute resolution came from President Harrison when the system had exonerated a pastor who was publicly and aggressively teaching that the Bible has errors, that women should be ordained, that homosexual activity is not sinful, and that evolution is true. Prior to all of this, President Harrison had patiently arranged for this man’s dissent regarding A Statement of Scriptural and Confessional Principles (which rejected the errors of Seminex and was adopted by convention as official Synod doctrine in 1973) to be considered by the CTCR. After the CTCR unanimously rejected the dissent, President Harrison—in a spirit of patience, and hoping to win the brother—requested that the CTCR staff (the Rev. Dr. Joel Lehenbauer and the Rev. Larry Vogel) and two seminary professors serving on the CTCR (one from each seminary) meet privately to try again to win the brother. All efforts failed. After the brother’s exoneration by a panel, a new case was filed regarding his teachings on evolution. As a result of this last case, however, the individual in question was removed from the Synod. It was in this context, after some five years dealing with the problem, that President Harrison appointed a task force to examine the current Bylaws and make recommendations for improvement.
That opening paragraph contains libelous statements. (Libel = “a published false statement damaging to a person’s reputation (cf. slander).”

To be sure, I’m not mentioned by name here, but anyone who has read about my expulsion last summer (e.g., on Matt Harrison’s Facebook page, on the front page of the St. Louis Post-Dispatch, in the Washington Post, in the Christian Century, in the blogosphere, etc.) or has read the Indiana District overture against me (published in the LCMS 2016 Convention Workbook), knows who is being referenced in that opening paragraph.

Apparently Exodus 20.16 does not apply to individuals who reach the heady levels of the synod’s presidium. Or maybe Luther's explanation to that verse just doesn't fit the situation of a person who is no longer a member of the presidium's church body. Or maybe it just doesn't fit the situation of a person Harrison & Co. consider to be a "heretic"?

I don’t think I have ever “aggressively” taught anything in my life. I certainly have never “aggressively and publicly” taught “that the Bible has errors.” If the presidium’s assertion here were true, then surely there would have been an uproar in the LCMS congregation I served between 2010 and 2014. Of all people, they are the ones who know what I have “taught publicly” and continue to teach. Or ask the Indiana District President who spoke with me several times during those years. Or ask the Northwest District President, who frequently did likewise. The only document that I know of, wherein I have pointed out a few “minor errors” in the Bible (which is no different from what Martin Luther himself did in the sixteenth century) is my critique of “A Statement.” In my book, Fundamental Theology, I devote several pages to defending the authority and infallibility of Holy Scripture. I write there about the Scripture’s “perfection” and “sufficiency,” i.e., the Holy Scriptures contain everything one needs to know in order to become knowledgeable of the nature and will of God, of the world as God's creation, of human beings as sinful creatures of God, of how sinners have been redeemed by Christ Jesus, and of the new creation that has dawned in Christ. I have also publicly written there about Scripture’s "necessity," which means the Scriptures are “able to refute the errors of human beings with respect to the revealed truth of the gospel and the articles of faith that serve as corollaries to the gospel.” I have not ever “publicly and aggressively” taught “that the Bible has errors.”

Yes, I have argued for the ordination of women to the pastoral office, but those writings can hardly be described as “aggressive.”

What about "homosexuality"? I have never “publicly and aggressively” taught “that homosexual activity is not sinful.” That assertion of the presidium is libel. Plain and simple. Members of the presidium, run your assertion past the saints at Immanuel Lutheran Church, Michigan City, Ind. Run it by Dan May or Paul Linnemann. Run that assertion by my students here at Valpo. Run it by my colleagues. Run it by my wife. In other words, run it by people who actually know me and are familiar with my life and teaching. I have never written an essay nor delivered a paper on sexual ethics, let alone one that teaches “homosexual activity is not sinful.” No human activity, in and of itself, is ever free of the power of sin.

With respect to Pres. Harrison’s actions toward me, many who are familiar with the course of those actions in 2009-2014 would not describe them as “patient.” Apparently the presidium has forgotten about Harrison’s email to Joel Lehenbauer and Larry Vogel in which he directed the CTCR to act quickly on my dissent. If you examine that email there's not a hint of concern for the brother in question. Just an order to get a swift decision. And when I was formally and officially cleared of last year's charge of teaching false doctrine (dealing with my openness toward women's ordination), well, just check out Harrison's Facebook posts from that period. I will leave it to others to evaluate how best to describe Pres. Harrison's behavior in all this. The words "spirit of patience and hoping to win the brother" are not ones that come to my mind.

Clearly, the synod cannot tolerate even a single professor who publicly raises criticisms against the synod's support for creationism and its rejection of a mainstream scientific theory. Nor can the synod tolerate even a single professor who publicly raises criticism against the synod's practice of restricting the office of pastor to men. Nor can the synod tolerate even a single professor who publicly criticizes "A Statement" for its flawed and wrong-headed approach to biblical authority and interpretation.

Members of the Presidium: I'm no longer a member of your brotherhood. There's no need for you to stretch the facts of my dissent to the point of libel. If you feel the need to scapegoat me and use my dissent as the main reason for why you feel the need to call upon the synod to revise its bylaws, then at least stick to the facts.

Friday, April 22, 2016

A Parting Shot

Just over one year ago a Montana LCMS pastor (who is also the district president there) officially accused me of teaching false doctrine. The issue? Six-day creationism, or more precisely, my online essay, "The Scandal of the LCMS Mind," in which I raise both scientific and theological criticisms against six-day creationism. That formal charge eventually factored in to the NW District President's decision to suspend me from the LCMS clergy roster. In his view it was just a matter of time before the Council of LCMS District Presidents would act to remove me from that roster. When I did not appeal my suspension, I was expelled (July 15, 2015). My family and I have now become members of a local ELCA congregation, and I will soon be seeking to become rostered in this church body.

So I was surprised to learn earlier this week that a 2015 overture directed against me by the Indiana District has now been published in the 2016 LCMS Convention Workbook. Already last spring I was surprised by this overture, since no one from the Indiana District ever met with me face-to-face to discuss his/her concerns, let alone give me an opportunity to respond to the district's overture, which was adopted and then submitted to St. Louis so as to become a synodical overture. During the years (2010-2014) that I served an LCMS congregation in Indiana, I met with the Indiana District President several times, always to discuss that interim situation and the congregation's pastoral care. Never once did he raise any concerns with me about my public teaching or preaching. Just the opposite. He repeatedly told me, as late as the day the new pastor was installed there (Mar 2014), that he had been very pleased with the pastoral care, preaching (which he could observe online), and teaching that I had provided the congregation during its difficult pastoral vacancy. I don't know if the Indiana District President ever spoke against the overture at the district convention, or tried to encourage the people behind it to meet personally with me, but he never spoke with me about it, nor did anyone else from that  district.

To read the whole resolution (4-22, p. 335), it can be downloaded here.

Here are some excerpts:

To Publicly Call Rev. Dr. Matthew Becker to Repentance

Whereas, Holy Scripture warns, “Beware of false prophets, who come to you in sheep’s clothing but inwardly are ravenous wolves” (Matt. 7:15); and

Whereas, Holy Scripture warns, “I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve” (Rom. 16:17−18); and

Whereas, Holy Scripture warns, “For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions, and will turn away from listening to the truth and wander off into myths” (2 Tim. 4:3−4); and

Whereas, Holy Scripture declares, “All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be competent, equipped for every good work” (2 Tim. 3:16−17); and

Whereas, Rev. Dr. Matthew Becker has stated on his own blog, Transverse Markings: One Theologian’s Notes (http://matthewlbecker.blogspot.com/2013/10/what-is-he-trying-toaccomplish.html), that he has three goals for the LCMS, all of which are contrary to the Scriptures and the positions of Synod:
1. To encourage members within the Synod to think differently about two issues, namely (a) the Synod’s understanding of Scripture that insists that only qualified men may serve as pastor in the Synod; and (b) the Synod’s understanding of Scripture that requires one to interpret the creation accounts in Genesis to be literal, historical descriptions of what God did in the not-too-distant past over the course of six actual 24-hour days (“six-day creationism”);
2. To have the Synod change its position that restricts the office of pastor only to men;
3. To have the Synod reject “creationism” in favor of “a more robust doctrine of creation, one that sets forth a theological understanding that better accords with the language and genre of these Genesis texts and that better accords with what people today know to be true and valid about the natural history of our planet”; and

Whereas, Rev. Dr. Matthew Becker has filed dissent, yet continues to publicly teach and promote false doctrine including woman’s ordination, having published articles on his own blog and on Daystar, where he published an article titled “An Argument for Female Pastors and Theologians” in which he states: “There is no legitimate biblical or dogmatic rationale for why the LCMS should now prohibit women from serving as theologians and pastors in the church” (http://thedaystarjournal.com/an-argument-for-womenpastors-and theologians/); and...

Whereas, Rev. Dr. Matthew Becker continues to teach and promote false doctrine publicly, including promoting a figurative interpretation of Genesis 1 and 2 by stating in his post, “The Scandal of the LMCS Mind”...“Scientific data about the reality of physical death in the animal and plant kingdoms prior to origin of human beings (e.g., fossils of animals that lived long before the origin of human beings) must lead those who interpret the Bible in light of scientific knowledge to restate the nature of God’s good creation prior to the advent of human sin (e.g., such a good creation must have included the reality of death prior to the existence of human beings) and the character of the historical origin of sin (e.g., the advent of sin is to be traced to the first hominids who disobeyed God’s will but not necessarily to their having eaten from a tree in an actual place called the Garden of Eden several thousand years ago)”; and

Whereas, the LCMS Commission on Constitutional Matters (CCM) has ruled, ‘While the filing of dissent does not constitute a case for removal, the member is required to teach and practice in accord with Synod’s stated confessional position during the dissent process. If the member fails to honor and uphold the stated confessional position of the Synod during the dissent process, the member becomes subject to disciplinary action due both to the violation of the doctrinal position of the Synod and the offense against the other members of the Synod created by such failure (Constitution Art. XIII 1). In such case it is incumbent upon the ecclesiastical supervisor of the member to exercise disciplinary action against the member who fails to teach and act within Synod’s stated confessional position, whether apart from or during the dissent process (Bylaws 2.14.4; 2.15.4; 2.16.4)” [Opinion 13-2694, June 13, 2014]; and...

Whereas, President Matt Harrison stated on the “Witness Mercy Life Together” blog: “When a public teacher on the roster of Synod can without consequence publicly advocate the ordination of women (even participate vested in the installation of an ELCA clergy person), homosexuality, the errancy of the Bible, the historical-critical method, open communion, communion with the Reformed , does not change its inability to call such a person to repentance and remove such a teacher where there is no repentance, then we are liars and our confession is meaningless. I do not want to belong to such a synod, much less lead it. I have no intention of walking away from my vocation. I shall rather use it and, by the grace of God, use all the energy I have to call this Synod to fidelity to correct this situation”; therefore be it

Resolved, That the Indiana District in convention commend President Harrison in his diligence to uphold the teachings of Holy Scripture and also the Constitution and Bylaws of the LCMS: And be it further

Resolved, That the Indiana District encourage President Harrison to provide a full report to the Synod of this matter involving Rev. Dr. Matthew Becker; And be it further

Resolved, that the Indiana District request the Synod in convention publicly to call upon Rev. Dr. Matthew Becker to repent and recant, or remove him from the clergy roster of the Synod; And be it finally

Resolved, That the Indiana District encourage everyone throughout the Indiana District to pray fervently to the Lord of the Church that His Holy Spirit, working through the holy and inerrant Word of God, would lead Rev. Dr. Matthew Becker to repentance and to confess once again with us in doctrinal unity what we believe, teach, and confess.

Indiana District


The decision to include this overture--and another one that is similar to it--in the 2016 Workbook was ultimately up to Matt Harrison. Why publish these overtures ten months after the condemned one has already been expelled from the Missouri Brotherhood? Harrison's version of an Auto-da-Fés? A public warning not to rock the LCMS dinghy? "Never again will we allow this kind of critical-theological questioning!" That would make some sense, I suppose, given the fears and outcries of Harrison & Co. That others have found this decision of his questionable is clear from the statement that a former synodical official recently made: "How an overture regarding someone who already left the denomination got published is troubling to me, because it didn't have to be. So that's a smile upside down from me."

These overtures will initially go before "The Committee on Life Together." As one who got the boot, who was told that he doesn't belong any longer in the fellowship, I do wonder what the basis for life together in the LCMS is these days. Unity in the gospel and in the sacraments administered in accord with the gospel? That's the clear and sufficient basis set forth in the Augsburg Confession. But what is the basis in the LCMS? Certainly not this rather slim Augsburgerische one. The LCMS basis is much more maximal and includes that church's body's equivalent to canon law: "gemeinsames Leben durch das synodische-kanonische Recht..."

Thursday, April 7, 2016

Pericope of the Week: Barbour's Issues in Science and Religion

This year marks the fiftieth anniversary of the publication of Ian G. Barbour's ground-breaking Issues in Science and Religion (Harper and Row). When I first read it in college in the early 1980s, it was a Godsend, since it opened for me a new way of positively relating commonly-held conclusions in the natural sciences to my own developing theological understanding of the Christian faith. Since then I have regularly made use of it in courses I teach on theology and the sciences. Not only does the book present a clear and systematic overview of the development of scientific knowledge and the philosophy of science (through the early 1960s), it provides penetrating analysis of various theological and philosophical positions one could hold in relation to those scientific developments. Barbour's own defense of what he called "critical realism" has continued to shape my own approach toward relating the sciences and theology.

For Barbour, who earned both a Ph.D. in physics (U. of Chicago) and a B.Div. in theology (Yale), scientific theories do not provide a photographic representation of the world ("classical realism"), nor are they merely calculative devices ("instrumentalism") or purely mental representations of reality ("idealism"). Instead, they provide partial, abstract but referential knowledge of aspects of the world, knowledge which is always subject to revision. Moreover, scientific theories involve human creativity and imagination (not just "facts," detached objectivity, and "pure reasoning"), and they are expressed through the use of metaphors (open-ended analogies) and models (systematically-developed metaphors). 
In these ways and others, science is similar to theology.

Ian Barbour (1923-2013)
Barbour also emphasized the hermeneutical and social-historical character of the actual "doing" of science. Data is always "theory-laden" and guided by (often unquestioned) metaphysical presuppositions about "nature." Scientific rationality is never purely "objective" but always "inter-subjective," temporal, historical, social, and communal.  Nevertheless, according to Barbour's version of "critical realism," the key criterion for a valid scientific theory is its agreement with actual data from nature. In other words, "truth is out there," in need of discovery, analysis, and explanation. While the internal coherence of a scientific theory is also important, a valid theory must correspond to reality, and it must prove itself useful in leading to new knowledge, e.g., more exact explanations of physical data.

According to Barbour:
Critical realism acknowledges the indirectness of reference and the realistic intent of language as used in the scientific community. It can point to both the extraordinary abstract character of theoretical physics and the necessity of experimental observation which distinguishes it from pure mathematics. It recognizes that no theory is an exact description of the world, and that the world is such as to bear interpretation in some ways and not in others. It affirms the role of mental construction and imaginative activity in the formation of theories, and it asserts that some constructs agree with observations better than others only because events have an objective pattern. (172) 
Theology, too, should operate from within the perspective of "critical realism." Theologians also need to recognize the limits of human knowing and the challenges in interpreting that which they study, e.g., biblical texts, human experience, religious traditions and practices, etc. Important here is recognizing the hermeneutical, historical, and sociological nature of theological understanding--and the important role that myths, analogies, metaphors, and models play in theological understanding of the world. Here, too, theology is similar to methods in the sciences. Both sets of disciplines organize their experiences and observations through these linguistic devices.

To be sure, Barbour also acknowledged important differences between the sciences and theology. For example, the latter speaks about claims to divine revelation, is more explicitly "self-involved" and existentially-committed, and is more attuned to non-cognitive goals, such as the fostering of religious faith, worship, obedience, service to others, etc. But despite these important differences, the contrasts between theology and the sciences are not as absolute as many think, both fifty years ago and still today.


We have argued that science, on the one hand, is a more human enterprise than is usually assumed, and that there is a "spectrum" of degrees and types of personal involvement in various fields of inquiry. Religion, for its part, presupposes cognitive assertions which are subject to critical evaluation. Such evaluation does not yield conclusions with the reliability of scientific results, to be sure, but we have argued that some of the same criteria are applicable; one's beliefs must be as coherent, comprehensive, and adequate to experience as alternative world-views. Reason is fulfilled, not abrogated, by revelation; reflective inquiry can coexist with religious commitment. Furthermore, we have defended the legitimacy of the wider search for coherence and synthesis which leads to a concern for metaphysics; the compartmentalization of thought thwarts the quest for unity. The critical realist cannot remain content with a plurality of unrelated languages; but at the same time he will recognize the limitations of all human concepts and the dangers of grandiose claims on behalf of any neat metaphysical system. The theologian, in turn, should be unwilling to settle for a solution that makes the gospel immune from attack at the cost of isolating it from contemporary intellectual life, or of destroying bridges of communication between theology and "secular culture." (268-269)

Friday, February 26, 2016

Murphy's Review of "In Christ All Things Hold Together"

Just about a year ago, right around the time that Pr. Terry Forke, an LCMS pastor and district president in Montana, was preparing to file a formal charge against me for "teaching false doctrine" with respect to "six-day creationism" and evolution (cf. esp. "The Scandal of the LCMS Mind" here; and "Talking Points about Doctrinal Authority in the LCMS" here), the Synod's Commission on Theology and Church Relations (CTCR) published its own study of "the intersection of science and Christian theology." I had planned to review this 139-page document last summer, but my expulsion from the clergy roster of the Synod in July interfered with that plan. After I had returned from Germany that month, I really wasn't in the mood to devote any time to such a problematic study of theology and science.

I may still post such a review of it in the near future, but for now I'd like to draw attention to a fine online essay that analyzes it superbly. The essay's author is the Rev. Dr. George L. Murphy, who grew up in an LCMS congregation. In the late 1960s he joined a Slovak congregation, when the Slovak Church was in fellowship with the LCMS (but a few years before it became the non-geographical "Slovak District" in the latter). During several years when he lived "down under," he was a member of the Lutheran Church in Australia. After returning to the US to begin teaching at Luther College, he and his family joined the American Lutheran Church, which later was a key player in the formation of the ELCA. So he has been a member of five different Lutheran church bodies over the course of a few decades--something of a record, I would think!

Dr. George L. Murphy
Dr. Murphy received his Ph.D. in physics from John Hopkins University in 1972. His focus was on Einstein's theory of general relativity. After teaching and conducting research in physics for an apostolic number of years, he matriculated to Wartburg Seminary, where he received his theological education. Ordained in 1983, he has served Lutheran and Episcopal congregations. He has also written numerous articles and books on the interface between science and Christian theology (from a distinctly Lutheran perspective). Since getting to know him (mainly through his wonderful books on science and theology, but also through regular email communication with him), I like to think of him as our North-American version of John Polkinghorne (who earned his Ph.D. in mathematical physics before becoming an ordained Anglican clergyman). George's books and writings on "science and theology" continue to be important resources for me and the students who take my summer-semester course on the Christian doctrine of creation (a course that leads us to engage Christian-Lutheran theological understandings in relation to mainstream scientific theories about nature and other issues in the natural sciences). For more details about Dr. Murphy, go here and here.

What about his review of the CTCR's report, In Christ All Things Hold Together: The Intersection of Science and Christian Theology (St. Louis: CTCR, February 2015)?

After a brief introduction, Dr. Murphy highlights its few positive features:
(1) The report addresses an important topic, one that many churches tend to avoid;

(2) The report's criticisms of "scientism" and philosophical naturalism are generally "on target";

(3) The report is right to note how Christian theology (and specifically the Lutheran teaching about "vocation") can support scientific work.

These features aside, Dr. Murphy finds a lot more negative ones than positive:

(1) The report sets forth a problematic understanding of "natural theology"; (Here I actually disagree with Murphy's Barthian-tinged criticism, since I think there needs to be proper attention to questions about human experience that arise in what has traditionally been called "natural theology" before one can turn properly to address God's clearer response to that situation in Christ (the gospel!), i.e., to our human condition, to life under the divine law, to the deus absconditus--cf. my book, Fundamental Theology, pp. 129ff.)

(2) The report affirms a flawed understanding of "intelligent design"; (This is not surprising, since the report's principal author is Angus J. L. Menuge, a professor of philosophy at Concordia University, Wisconsin, and a proponent of ID theory. You can learn more about him here.)

(3) The report does not understand how scientists actually conduct their work according to standard principles of methodological naturalism;

(4) The report fails to draw upon any of the leading Christian theologians who are engaged in discussions about "science and theology." (I mention several of these, including George, in my chapter on "Christian Theology and the Sciences," Fundamental Theology, 433ff.) I would add that as far as I know, the leading scientists in the Concordia University System were not consulted in the process of writing this CTCR document. I know of several practicing scientists at Concordia, Portland, and elsewhere in the CUS who take issue with many statements in the report that belie a wrong understanding of how science is actually done.

(5) The report does not seriously engage the leading, mainstream scientific theories that it opposes (e.g., neo-Darwinian evolution; theistic evolution);

(6) The report supports six-day creationism, which is quite different from today's mainstream scientific understanding of a 13.7-billion-yr-old universe, a 4.5-billion-yr-old earth, a very long process of evolution in the very, very long natural history of the planet, etc. "How are scientists – and indeed any interested people – in the Missouri Synod supposed to deal with the massive array of data, connected by well tested theories, that astrophysicists, geologists, geophysicists, paleontologists, evolutionary biologists, geneticists and workers in other areas present in support of the current scientific picture of the world? No help is given with that." To me, this is the fatal flaw of the document.

Dr. Murphy ends his review by identifying the core problem with the CTCR report, namely, its misguided understanding of the nature of biblical interpretation, an issue to which I have also drawn attention and which contributed, at least in part, to my being given the LCMS boot.

Neither of the two (!) creation accounts should be read as "straight historical narrative." That way of reading them does violence to their genres. Murphy: "And why not consider what we know with some certainty about the physical world and its processes" in deciding what "the plain meaning" of a biblical text is? "Pascal had some worthwhile comments about that in the Eighteenth Provincial Letter." Neither creation story should be read as "scientific accounts but as different types of texts that compliment such accounts."

Bottom line: "Perhaps instead we should pursue a parallel Luther drew between the Word of God made flesh — a male Jewish human in a particular cultural setting — and the Word of God written by humans in a culture with a certain level of understanding of the world. In inspiring the writers of the Genesis accounts, God apparently did not feel it necessary to correct what we now know to be an erroneous picture of the world."

The entire review by Dr. Murphy can be read here. It nicely complements the review essay that my friend, Dr. Robert Sylwester, emeritus professor of education at the University of Oregon, wrote last year. You can read Bob's critical analysis here.

I hope both essays receive wide and attentive readings in LCMS circles--and beyond.

Tuesday, February 9, 2016

Theological Echoes and Tensions in Bonhoeffer's Discipleship

According to some scholars, Dietrich Bonhoeffer’s interpretation of the Sermon on the Mount, which forms the larger first part of Discipleship, marks a break with the interpretation of it by most previous German Lutheran theologians.  For example, in the context of Martin Doblmeier’s film, Bonhoeffer, John De Gruchy states that German Lutherans have traditionally interpreted the Sermon on the Mount as an impossible ideal, whose sole purpose is to make people aware of their sinful condition, and that Bonhoeffer’s interpretation of the Sermon on the Mount presented a novel departure from this understanding. A similar assessment is offered by Friedrich Schlingensiepen, who states that Bonhoeffer interpreted the Sermon on the Mount in a way that was “contrary to the usual Lutheran interpretation.”  For Bonhoeffer, “the Sermon on the Mount was intended not only to lead human beings to the conviction that they are sinners who can be saved only through faith in the grace of God; even more, Jesus required consistent obedience from his followers. Anyone who claimed otherwise was preaching ‘cheap grace.’”

Dietrich Bonhoeffer
Bonhoeffer's closest friend and principal biographer, Eberhard Bethge, also concluded that Bonhoeffer had held “the conventional Lutheran harmless understanding” of the Sermon on the Mount at least through 1929.  At that time, Bonhoeffer accepted the notion that a literal interpretation of the Sermon “would turn it into a law, and that law had been abolished through Christ.”

By the early 1930s, however, according to Bethge, “Bonhoeffer was entering new ground and an altered intellectual climate in his emphasis on the concreteness of faith in his interpretation of earthly discipleship, and his location of the disciple within the boundaries of historical and local decisions, fraught as they were with visible inconsistencies.” This “emphasis,” Bethge stated, was “in contrast to the Reformation era.” That conclusion seems already to have been made by Bonhoeffer himself when he remarked to his former teacher, Reinhold Niebuhr (in a 1934 letter from London), that the Sermon on the Mount “must be understood differently from the Reformational understanding.”  Gerhard Krause interpreted this remark to mean that Bonhoeffer himself “directed” Discipleship “against the students of Luther.”  In other words (to cite Bethge again), Bonhoeffer directed the book against his own earlier “conventional harmless Lutheran” understanding of the Sermon.

While Bonhoeffer’s treatment of the Sermon on the Mount in Discipleship differs in tone and content from previous interpretations by Lutheran scholars, to claim that it marks a departure from “the usual Lutheran interpretation” can also be misleading, since it seems to ignore Bonhoeffer’s continuity with exegetical decisions taken by Martin Luther himself. Even after 1932, the year Bonhoeffer claimed to have become a Christian (which also entailed his adoption of a form of Christian pacifism), he seems to have underestimated the degree to which he still shared basic exegetical and theological insights of Luther on the Sermon on the Mount. Accordingly, Bonhoeffer’s interpretation of the Sermon was not really "new for Protestant churches," as Schlingensiepen claims and as Bonhoeffer’s own remark to Niebuhr suggests.  Instead, Bonhoeffer uncovered issues and concerns in the biblical texts that German Lutheran theologians had been ignoring, repressing, forgetting, and distorting—insights that nonetheless are present in Luther’s own exegesis and that of a few other important Lutheran scholars from the century before Bonhoeffer, especially August Tholuck, whose commentary on the Sermon on the Mount was one of Bonhoeffer’s principal resources.

For further analysis of continuities and discontinuities between Bonhoeffer's Discipleship and Luther's sermons on the Sermon (and Tholuck's commentary on it), click this link.