David E. Garland (PhD, Southern Baptist Theological Seminary) is William B. Hinson Professor of Christian Scriptures and dean for academic affairs at George W. Truett Seminary, Baylor University. He is the New Testament editor for the revised Expositor's Bible Commentary and the author of various books and commentaries, including Mark and Colossians/Philemon in the NIV Application Commentary, and the article on Mark in the Zondervan Illustrated Bible Backgrounds Commentary. He and his wife, Diana, reside in Waco, Texas.
Walter L. Liefeld is distinguished professor emeritus of New Testament at Trinity Evangelical Divinity School and is the author of Luke in the Expositor's Bible Commentary series.