Sam Harris speaks to Bart Ehrman about his experience of being a born-again Christian, his academic training in New Testament scholarship, his loss of faith, the most convincing argument in defense of Christianity, the status of miracles, the composition of the New Testament, the resurrection of Jesus, the nature of heaven and hell, the book of Revelation, the End Times, self-contradictions in the Bible, the concept of a messiah, whether Jesus actually existed, Christianity as a cult of human sacrifice, the conversion of Constantine, and other topics. Bart D. Ehrman is the author or editor of more than thirty books, including the New York Times bestsellers Misquoting Jesus and How Jesus Became God. Ehrman is a professor of religious studies at the University of North Carolina, Chapel Hill, and a leading authority on the New Testament and the history of early Christianity. He has been featured in Time, The New Yorker, and The Washington Post, and has appeared on NBC, CNN, The Daily Show with Jon Stewart, The History Channel, National Geographic, BBC, major NPR shows, and other top print and broadcast media outlets. His most recent book is The Triumph of Christianity.   Episodes that have been re-released as part of the Best of Making Sense series may have been edited for relevance since their original airing.