Tim Muehlhoff is a professor of communication at Biola University in La Mirada, California; codirector of The Winsome Conviction Project; and a speaker and research consultant for the Center for Marriage and Relationships. His books include The God Conversation, I Beg to Differ, Winsome Conviction, and Winsome Persuasion.
J. P. Moreland is distinguished professor of philosophy at Talbot School of Theology in La Mirada, California. He has authored, edited, or contributed to thirty books and authored over 100 articles in professional journals of philosophy and theology.
As a full-time voice talent and Audie-nominated audiobook narrator, Lyle Blaker has narrated nearly 100 audiobook titles, as well as countless hours of e-learning narration for major companies. He is known for his warm, friendly, and approachable narration style.