Rodger L. Cragun holds a Master of Divinity degree from Pittsburgh Theological Seminary; assisted Markus Barth, Anchor Bible Ephesians; was ordained in the United Presbyterian Church in the United States of America; served as pastor of the Church of the Brethren; and conducted research at the University of Chicago and at Notre Dame. He has also published The Ultimate Heresy: The Doctrine of Biblical Inerrancy (1996).
Thomas Kessler is a former Capuchin Franciscan monk, priest, and director of novitiates. He studied at St. Anthony Friary and Capuchin Seminary in Marathon, Wisconsin, and conducted independent research at Graduate Theological Union, Berkeley, and in Assisi, Italy. His interests include Christian history, philosophy, theology, Greek and Latin.