IMO it is not, but I am worried about reviewer backlash, so this is probably as good a place as any to ask. The short version: Jesus was a reality warper, Christianity was a plot to unite all men and prevent a supernatural force to destroy mankind. I can certainly see how this could cause a backlash. I can't accurately predict what kind of an impact there could be in using the most famous religious character as a plot device. I should probably just stress the "WORK OF FICTION" part.