We know that this is from a series of texts that built on each other - many “facts” and feats attributed to Jesus were earlier attributed to Mithras and others.
The same “miracles” and other stuff get reused and applied to new prophets or supposed gods as they roll in.
The one for Predator is hilarious - done after the fact they can’t remember half the movie, and lots of amazing stories come out, such as the heat-camera not working in the jungle (as everything is hot) so they tried dousing the scenery in ice water, making the cast stand next to a fire, then quickly record it. It didn’t work well.