Mark Mittelberg is a bestselling author, international speaker, and the Executive Director of The Lee Strobel Center for Evangelism and Applied Apologetics at Colorado Christian University, where he helps equip believers through accredited degree programs and training resources. He is the author of Contagious Faith: Discover Your Natural Style for Sharing Jesus with Others and co-creator of the widely used Becoming a Contagious Christian course, which has equipped nearly two million people worldwide. His other works include Becoming a Contagious Church, Confident Faith (Outreach Magazine’s apologetics book of the year), The Questions Christians Hope No One Will Ask, The Reason Why Faith Makes Sense, and several collaborative projects with Lee Strobel, with whom he has partnered in ministry for more than thirty years. Formerly the evangelism director at Willow Creek Community Church and Executive Vice President of the Willow Creek Association, Mark holds an MA in Philosophy of Religion from Trinity International University and an honorary Doctor of Divinity from Southern Evangelical Seminary. He and his wife, Heidi, live near Denver and are the parents of Emma Jean and Matthew, both serving in ministry.