Richard Carrier's doctorate is in ancient history, with special emphasis on comparative mythologies. He's also a Biblical scholar and a Jesus mythicist. Here he is speaking at Zetiticon in Fargo North Dakota to explain that. We've known for a long time that the Jesus depicted in the Bible is not reflected in history. But where we once thought there was an actual rabbi on whom the legendary stories were based, it now seems that all that was made up out of nothing. There may have been people named Jesus living at that time, but it seems THAT Jesus never existed at all.
Dr. Richard Carrier on the Mythical Jesus