About the Authors
About the Authors
David Kinnaman is the coauthor of unChristian, You Lost Me, and Good Faith. He is the president of Barna Group, a leading research and communications company that works with churches, nonprofits, and businesses ranging from film studios to financial services. Since 1995, David has directed interviews with more than one million individuals and overseen hundreds of US and global research studies. He serves on the board of Biola University in southern California, where he lives with his wife and their three children.
Mark Matlock has been working with youth pastors, students, and parents for more than two decades. He is the principal at WisdomWorks, a consulting group dedicated to helping churches and faith-centered organizations leverage the transforming power of wisdom to accomplish their mission. Mark is the former executive director for Youth Specialties (YS) and creator of the PlanetWisdom teen discipleship conferences. He has written more than twenty books for teens and parents. In addition, Mark is an ordained minister serving as a member of Irving Bible Church and serves on several boards including the American Bible Society. Mark and his wife live in Texas and have two adult children.