MERRILL F. UNGER (A.B., Ph.D., Johns Hopkins University; Th.M., Th.D., Dallas Theological Seminary) pastored several churches before joining the faculty of Dallas Theological Seminary in 1948. There he served as professor of Old Testament studies until his retirement in 1967. He was the author of many books including such monumental reference works as Unger's Bible Dictionary, Unger's Bible Handbook, and the two-volume Unger's Commentary on the Old Testament.

R. K. HARRISON (1920-1993) (B.D., Th.M., Ph.D., University of London; D.D., Huron College, London, Ontario) was a professor at Wycliffe College, University of Toronto. He also served as a professor at Toronto School of Theology. He wrote, co-authored, and edited dozens of books including Numbers for the Wycliffe Exegetical Commentaries and Unger's Bible Dictionary.

HOWARD F. VOS ( B.A., Wheaton College; M.A. and Ph.D., Northwestern University; Th.M. and Th.D., Dallas Theological Seminary) was Professor Emeritus of History and Archaeology at The King's College, Tuxedo, New York, and Adjunct Professor at the King's campus in the Empire State Building, New York. He was the author of twenty-five books including Beginnings in Bible Geography, Can I Trust The Bible, Genesis and Galatians in the Everyman's Bible Commentary Series, and co-author of the Wycliffe Encyclopedia. He wrote from his vast knowledge of Bible geography, archeology and church history for Christians seeking to increase their understanding of Scripture. Additionally, he traveled extensively in the Bible lands and excavated many sites in Israel.

CYRIL J. BARBER has served as a visiting professor in Biblical Studies at Talbot Theological Seminary and a Counseling Associate with Insight for Living in Fullerton, California. Previously, Dr. Barber was Professor of Bibliography at the International School of Theology in Arrowhead Springs, California. Dr. Barber is author of numerous books, including Ruth: A Story of God's Grace, Introduction to Theological Research, Joshua: A Devotional Exposition, and The Faithfulness of God: Devotional Studies in I Chronicles. He lives in Hacienda Heights, California.