George Kalantzis (PhD, Northwestern University) is professor of theology and director of The Wheaton Center for Early Christian Studies at Wheaton College. He is the author of Caesar and the Lamb: Early Christian Attitudes on War and MilitaryService and Theodore of Mopsuestia: Commentary on the Gospel of John, and he is the coeditor of Evangelicals and the Early Church: Recovery, Reform, Renewal; Life in the Spirit: Spiritual Formation in Theological Perspective; Christian Political Witness; and The Sovereignty of God Debate.

Jeffrey P. Greenman (PhD, University of Virginia) is academic dean and associate professor of theology and ethics at Regent College in Vancouver, BC, Canada. He is coauthor of Unwearied Praises: Exploring Christian Faith Through Classic Hymns and Understanding Jacques Ellul. He is coeditor of numerous books including The Sermon on the Mount Through the Centuries, Reading Romans Through the Centuries: From the Early Church to Karl Barth, and The Decalogue Through the Centuries: From the Hebrew Scriptures to Benedict XIV. Greenman is a member of the Society of Christian Ethics and the American Academy of Religion.