Tim Muehlhoff (PhD, University of North Carolina at Chapel Hill) is a professor of communication at Biola University in La Mirada, California, where he teaches classes in family communication, interpersonal communication, persuasion, and gender. He is the author of I Beg to Differ and Marriage Forecasting, and the coauthor of The God Conversation: Using Stories and Illustrations to Explain Your Faith and Authentic Communication: Christian Speech Engaging Culture. Muehlhoff and his wife, Noreen, are frequent speakers at FamilyLife Marriage Conferences, and he has served with Campus Crusade since 1986. They live in Brea, California, with their three boys.
J. P. Moreland (PhD, University of Southern California) is Distinguished Professor of Philosophy at Talbot School of Theology, Biola University, in La Mirada, California. He is the author, coauthor, or contributor to over ninety-five books, including Does God Exist?, Universals, The Blackwell Companion to Natural Theology, Consciousness and the Existence of God, Philosophical Foundations for a Christian Worldview, In Search of a Confident Faith, Love Your God With All Your Mind, The God Question, and Debating Christian Theism.In his distinguished career, Moreland has co-planted three churches, spoken and debated on over 175 college campuses around the country, and served with Campus Crusade for Christ for ten years. The founder and director of Eidos Christian Center, he also previously served as a bioethicist for PersonaCare Nursing Homes, Inc. headquartered in Baltimore, Maryland. Moreland?s ideas have been covered by both popular religious and non-religious outlets, including the New Scientist, Christianity Today, PBS's "Closer to Truth," and WORLD magazine. In 2016 Moreland was selected by The Best Schools as one of the "50 most influential living philosophers."