Note I said "slightly". I found the book quite funny (and only moderately sacrilegious) up until Jesus and Biff left Israel to go looking for the The Wise Men. At that point it took a sharp left turn into Joseph Campbell land. The book nosedives as Jesus learns magic and mysticism from various Buddhist, Hindu, and Occultic sources, and shapes His Gospel from them.
Not so surprisingly, at the end of the book the writer actually does credit Campbell for help with it's content.
Pinging the good Doctor E to this post, as you were the first person that came to mind when I read this book.
Thanks for the ping. I love coming to mind. 8~)
But I've never read any of the DaVinci Code books. I'm waiting for the movie to see just how far Hanks has sunk.