Born again at sixteen, John Marks later abandoned his faith. In Reasons to Believe he attempts to cross a deep cultural barrier to understand those who now condemn his way of life. He speaks at length with missionaries, political activists, theologians—the rich and powerful, the poor and broken, and the pastors who have turned small congregations into megachurches. The result is a remarkable, intimate portrait of evan-gelicals, one of the most influential forces in America today, and the unforgettable story of how a lapsed believer came to terms with his faith.