Bart Ehrman’s new book “Jesus Before the Gospels” makes the case that the stories about Jesus would have changed and evolved before they were written down as the Gospels.

Richard Bauckham, author of “Jesus and the Eyewitnesses”, defends the view that the Gospels were written by those with access to eyewitness testimony of Jesus’ first followers. They debate who wrote Mark, whether the the Gospels came from anonymous traditions and how they received their titles.