David Kinnaman is the author of the bestselling books Faith For Exiles, Good Faith, You Lost Me and unChristian. He is 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 two million individuals and overseen thousands of U.S. and global research studies. He lives in California with his three children.