In 2010, Ray Ortlund preached a series on Proverbs, and it’s now available in Kent Hughes’s Preaching the Word series:
Raymond C. Ortlund Jr. Proverbs: Wisdom That Works. Preaching the Word. Wheaton: Crossway, 2012. 216 pp. (28-page sample PDF)
How do you preach the book of Proverbs? Chapters 1–9 form logical units that one may preach sequentially, but the logical arrangement is hard to discern for much of the rest (especially 10:1–22:16). Here is how Ortlund preaches the book in twenty-one sermons: