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. John R. Kohlenberger III (MA, Western Seminary) is the author or coeditor of more than three dozen biblical reference books and study Bibles, including The Strongest Strong's Exhaustive Concordance of the Bible, NIV Interlinear Hebrew-English Old Testament, NRSV Concordance Unabridged, Greek-English Concordance to the New Testament, Hebrew-English Concordance to the Old Testament, and the award-winning NIV Exhaustive Concordance and NIV Bible Commentary. He has taught at Multnomah Bible College and Western Seminary in Portland, Oregon. Richard Polcyn (Th.M., Dallas Theological Seminary) edited the Old Testament volume. He was an editor for Union Gospel Press and continues to work as a freelance editor. Verlyn D. Verbrugge (PhD, Notre Dame) is senior editor of academic and professional books at Zondervan. He has authored several books, including Early Church History and Your Church Sign.