David Kinnaman is the co-author of unchristian and author of You Lost Me. He is president and majority owner of Barna Group, where he has supervised or directed interviews with more than 500,000 individuals and overseen hundreds of nationwide, representative research studies. Barna Group's body of research is frequently quoted in major media outlets such as USA Today, The Wall Street Journal, CNN, and the New York Times. Kinnaman speaks on topics including cultural and spiritual trends, teenagers and young adults, leadership and influence, and vocation and calling. He and his wife, Jill, live in California with their three children. Gabe Lyons is the co-author of the bestselling unchristian, author of The Next Christians, and the founder of Q, a learning community that mobilizes Christians to think well and advance good in society. Prior to launching Q, Gabe cofounded Catalyst, a national gathering of young leaders. His work represents the perspectives of a new generation of Christians and has been featured by CNN, the New York Times, Fox News, and USA Today. Gabe, his wife, Rebekah, and their three children reside in Nashville, Tennessee.