Kenneth L. Barker (PhD, Dropsie College for Hebrew and Cognate Learning) is an author, lecturer, biblical scholar, and the general editor of the NIV Study Bible.
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.