R. Kent Hughes (DMin, Trinity Evangelical Divinity School) is senior pastor emeritus of College Church in Wheaton, Illinois, and former professor of practical theology at Westminster Theological Seminary in Philadelphia, Pennsylvania. Hughes is also a founder of the Charles Simeon Trust, which conducts expository preaching conferences throughout North America and worldwide. He serves as the series editor for the Preaching the Word commentary series and is the author or coauthor of many books. He and his wife, Barbara, live in Spokane, Washington, and have four children and an ever-increasing number of grandchildren.

Douglas Sean O'Donnell (PhD, University of Aberdeen) is the senior vice president of Bible editorial at Crossway. Over the past twenty-five years he has helped train people around the world to read and teach the Bible clearly. He has pastored several churches, served as a professor, and authored or edited over twenty books, including commentaries, Bible studies, children's books, and a children's curriculum. He also wrote The Pastor's Book with R. Kent Hughes and The Beauty and Power of Biblical Exposition with Leland Ryken.