Now and again a book comes along that deserves to have a long shelf life. That happened in 1982 when The Sermon on the Mount. A Foundation for Understanding was published. Written by Robert Guelich Professor of New Testament at Fuller Seminary, it was very warmly received, and described as exactly what readers of the Sermon were looking for.
It became clear as I worked through it, that this book was in a different league to anything else available 40 years ago. It quickly established itself for the thoroughness and thoughtfulness of the exegesis, and for the refusal of the writer to dilute, evade or tame the text.
Blurb on the backs of books can be a minefield of exaggeration and over-praising, and often enough written by scholarly allies. Jimmy Dunn was well above that kind of academic mutual back scratching. Here's what he says about Guelich's book:
This is quite simply the most important full-scale study of the Sermon on the Mount to be written in any language, certainly in the past forty years, and most probably in the last hundred years. It is unsurpassed in the comprehensiveness of its treatment and in its breadth of sympathy, using as it does, all the tools of current New Testament research and taking full account of both the concerns of the man in the pew and the detailed discussions of modern scholarship. It sums up the debates of more recent studies with a sure touch, and its own findings are very balanced and most persuasive. Undoubtedly this volume will provide an invaluable starting point for future research in this area for at least another generation."
As a stand alone commentary on the Sermon on the Mount, Guelich was miles ahead of any other volume in the field, and by far the most useful guide to the topography and geology, the fauna and the flora, the semantics and syntax, the grammar and theology, and the dramatic contours of the textual mountain that is the Matthean Sermon on the Mount. It remains, as Dunn predicted, a standard study, joined now by various others who bring the exegesis up to date, explore new viewpoints and approaches, and develop further our understanding of Matthew, his community, and the social milieu out of which the Gospel of Matthew emerged.
Of the books I own on the Sermon, Guelich is still one of the first to consult, supplemented by several more recent additions to the literature that match it for considered conclusions and the rounded exegesis that are the quality hallmarks of Guelich's work.
A quick roundup of significant treatments since Guelich would include:
In 1995 Hans Dieter Betz published his long anticipated volume, The Sermon on the Mount, the Hermeneia Commentary. It is a massive critical commentary that includes comprehensive analysis and comparison of Matthew's Sermon on the Mount and Luke's Sermon on the Plain. It has established itself as the standard critical treatment, with through and detailed exegetical work using the full range of hermeneutical approaches, and with careful attention to both Hellenistic and Jewish contexts. At over 700 pages it does make for hard work, difficulty in seeing the forest because of such concentration on trees, branches and twigs of interpretive interest. But it is indispensable, Though as Eugene Boring warns, (a writer I both respect and whose own commentaries I value): "Betz has only disdain for the "tourist" who wants to understand the Sermon on the Mount in a half-hour-" Quite so!
Preachers were delighted when Scot McKnight's Sermon on the Mount was published in The Story of God series in 2013. Based on the assumption that the Bible is the story of God and God's people living in God's world, This series, and McKnight's commentary work on three levels: Listen to the Story; Explain the Story; Live the Story. Similar to the NIVAC series, this stand alone treatment of Matthew's text of the Sermon is accessible, lucid, informative and vintage Scot McKnight. For example. There are 15 pages of exegetical, ethical and pastoral analysis of Matthew 5.31-32 where Jesus speaks of permissible and impermissible divorce. This is a hard saying of Jesus, and requires levels of exegetical care and pastoral sensitivity in interpreting such potent texts within a community where people will have very diverse experiences of marriage and divorce. I know of no better explication of the issues, nor a more pastorally careful examination of the experience of marriage failure, its consequences, and possible redemptive avenues for the individuals and the community. The whole volume reflects such excellence and I wouldn't be without it.
2017 brought us The Sermon on the Mount and Human Flourishing, by Jonathan Pennington. This is a very different kind of commentary. The first half is called Orientation, and is where Pennington lays out his thesis, which is that the Sermon is best understood within the Wisdom Tradition and with firm connections to virtue ethics as a way of understanding human moral behaviour within the context of Christian discipleship and obedience. Only then is the text itself explored as a gathering of guidance intended to enable, facilitate and resource human flourishing. Again this is a fine work, original, erudite, informed by a range of hermeneutical approaches, and guiding the reader to an understanding of a text that is the moral guide for life in the Kingdom of God, centred in Christ, and looking forward to the culmination of God's good purposes for human life and community.
Guelich, Betz (for those up for exegetical mining and / or mountaineering), McKnight, and Pennington. There have been other important contributions, but together these are a good balance of current studies.
Only to add that several of the recent commentaries on Matthew contain valuable resources in their own right – Allison and Davies, ICC, Vol.1; France, NICNT; Hagner, Word Commentary, Vol.1; Bruner, Christbook and Churchbook, Vol1.; and most recently Culpepper, NTL Commentary.