David E. Garland (PhD, Southern Baptist Theological Seminary) is professor emeritus of Christian Scriptures George W. Truett Seminary, Baylor University. He is the author of A Theology of Mark's Gospel and has written commentaries on each of the Synoptic Gospels, Acts, Romans, both Corinthian epistles, Colossians, and Philemon. He also serves as the New Testament editor for the revised Expositor's Bible Commentary.

Clinton E. Arnold (PhD, University of Aberdeen) is research professor of New Testament at Talbot School of Theology, Biola University in La Mirada, California. He has authored many books and commentaries, including Ephesians in the Zondervan Exegetical Commentary series and Acts in the Zondervan Illustrated Bible Backgrounds Commentary.