Klaus Issler (Ph.D., Michigan State) is professor of Christian education and theology in the Ph.D. program in educational studies at Talbot School of Theology, Biola University, in La Mirada, California.
Dr. Ronald Habermas has taught in Christian higher education for more than twenty-five years and he has served on the staff of local churches for more than a dozen years. He is a member of the North American Professors of Christian Education and holds degrees from William Tyndale College, North American Baptist Seminary, Wheaton Graduate School, and Michigan State University. Dr. Habermas is the author of many journal articles and several books including The Complete Disciple. Currently he researches and writes on various projects, while doing adjunct teaching.