Today’s conversation is with Dr. Grant Wacker -- academic and author, and distinguished professor emeritus at Duke Divinity. His studies have focused on American Christian History, particularly on Pentecostalism and American culture. Today, we are talking to him about the Pentecostal life, and also what we might learn from the significant ministry of Billy Graham about how to do evangelism in the 21st century. Dr. Wacker has written two books on that topic – America’s Pastor: Billy Graham and the Shaping of a Nation, and One Soul at a Time: The Story of Billy Graham.