Everett Ferguson (PhD, Harvard) is professor emeritus of Bible and distinguished scholar-in-residence at Abilene Christian University in Abilene, Texas, where he taught church history and Greek. He is the author of numerous works, including Backgrounds of Early Christianity, Early Christians Speak, and Baptism in the Early Church: History, Theology, and Liturgy in the First Five Centuries. He was also general editor of the two-volume Encyclopedia of Early Christianity.

John Woodbridge (PhD, University of Toulouse, France) is research professor of Church History and History of Christian Thought at Trinity Evangelical Divinity School in Deerfield, Illinois, where he has taught since 1970. He was previously a senior editor of Christianity Today and is the author of Biblical Authority: A Critique of the Rogers/McKim Proposal and coauthor of Letters Along the Way. He is the editor of Great Leaders of the Christian Church and coeditor of works including The Mark of Jesus. Woodbridge is the recipient of four Gold Medallion Awards.

Frank A. James III (PhD, Oxford; PhD, Westminster Theological Seminary) is the president of Biblical Seminary in Hatfield, Pennsylvania. He is the author or editor of numerous works on the Reformation and has been a consultant and script writer for a historical documentary film series.