I have a theory. Jesus was a robot. Not like anything we can currently develop. He wasn't one of those Japanese robot "pets" currently available. I'm talking a nanite-based artificial life form, similar to the human style replicators seen in Stargate SG-1. I believe this to be because I don't think God would break the laws of nature He Himself laid down. If a man dies on the cross, he's dead. He cannot be resurrected. However! If he were a robot (built by God in heaven then surreptiously placed in the womb by an angel entity, allowing time for the nanites to replicate and form an AI), he could give the semblance of having died on the cross (blood would be easy to mimic - see: Joesph Sisko's idea), then simply regenerate in the cave. It gives the story of Jesus credibility. No need for magic here, folks.
Well, there's "dead" by current human standards, and then there's "very, very nearly dead, but there's still a tiny spark of life that can still be brought back." Think John Sheridan. Also, Neelix, that one time with the nanoprobes.
Of course, all those people who denounce cloning as "playing god" are gonna be pretty sore when they find the secret lab behind that cave...