Richard Carrier is a freelance historian with a PhD in Ancient History from Columbia University. He is arguably the most prominent proponent of the Christ Myth hypothesis, today, and one of the few historical scholars with actual qualifications in history that holds to such a position. If you are unaware, the Christ Myth hypothesis argues that there never existed an actual, historical Jesus of Nazareth upon whom the Christian faith eventually became focused. Instead, the Jesus of Nazareth presented in the gospels is a deliberate attempt to tie myths about a celestial being into history. This view is generally dismissed, panned, and ignored by the vast majority of mainstream scholarship, and one could quite rightly describe Richard Carrier as a fringe scholar. However, the simple fact that Carrier is a fringe scholar is not a very good reason for dismissing his work, out of hand. The man is actually a qualified historian, with a PhD from a respected university, who has had articles published in respected academic journals. The fact that his hypothesis goes against mainstream scholarship does not invalidate the rest of his qualifications.
Carrier recently published a book entitled On the Historicity of Jesus: Why We Might Have Reason to Doubt which lays out his views and arguments. I have been meaning to purchase, read, and review that book for this site since it was released, but I refuse to pay $85 for the hardcover or $35 for the paperback version– I find such prices to be wholly excessive. Unfortunately, the book has not yet received an eBook release, which I might be more inclined to purchase (though not if the price is similarly high). Still, Carrier has engaged in a number of debates and public presentations, and it is easy to find at least an overview of his position. For example, he recently gave a talk at Zeteticon which outlines his view.
One of the major points that Carrier alleges, in his presentation, is that we have evidence that there was a pre-Christian, Jewish belief in a celestial being which was actually named Jesus, and was the firstborn son of God, in the celestial image of God, who acted as God’s agent of creation, and was God’s celestial high priest. I have seen Carrier present this information numerous times, in different talks, including the one which I linked above, and he always presents it without actually quoting from the sources which he cites. Now, as I’ve said, I haven’t yet read On the Historicity of Jesus, and it is fully possible that Carrier addresses some of my contentions there, but I find his entire claim that there was a pre-Christian, Jewish belief in a celestial Jesus to be almost entirely unsupportable.