Many believe that the Gospel stories of Jesus are based on eyewitness testimony and are therefore historically reliable. Now, for the first time, a scholar of the New Testament, New York Times bestselling author Bart D. Ehrman (Misquoting Jesus; and Jesus, Interrupted), surveys research from the fields of psychology, anthropology, and sociology to explore how oral traditions and group memories really work and questions how reliable the Gospels can be. Focusing on the decades-long gap between when Jesus lived and when these documents about him began to appear, Ehrman looks to these varied disciplines to see what they can tell us about how the New Testament developed.