Karen H. Jobes (PhD, Westminister Theological Seminary) is the Gerald F. Hawthorne Professor Emerita of New Testament Greek and Exegesis at Wheaton College and Graduate school in Wheaton, Illinois. The author of several works, she has also been involved in the NIV Bible translation. She and her husband, Forrest, live in Philadelphia and are members of an Evangelical Presbyterian Church.

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.