. . reveal how the card tricks are done.

Actually, Christianity was a paste-up of elements of what was going around at the time in religion. Some of the parts didn't fit quite right so you have to expect inconsistencies.

The basic core (Jesus & Mary) is just a rewrite of the Mediterranean religion of the "dying god", probably picked up from the Isis/Osirus cult which was popular at the time. Naturally there were problems fitting this to the "one father God" of Judaism so there are cracks in the plaster.