I am yet to read the link you posted, Leaving, but I can tell you this much. In my opinion, some Jew may have been speaking up against the authorities of his time. That guy had a bunch of friends. Apparently he said he would return from the dead. He may have been crucified, or not, and after his death his buddies started telling people about the things they claimed he had done. The message got distorted along the way and over the years, and then got written down. Some other people wrote more things, and after so many years someone had the idea that some of all the books circulating had been inspired by the heavenly father of the man who may have died in the cross. Receiving this new light took them some centuries, but then it came and, voila, the Word of God was created. The writings were distorted again, only this time in writing, and all the Christian factions were fighting each other tooth and nail over things they never saw, until Constantine gave official power to one of those factions, which promptly sent every other Christian to Hell.
The man need not have been divine. It may have all been the human mind at its worst.