They are not. I looked it up.

For example, Christmas is simply the evolution of Dies Natalis Solis Invicti. Reappropriated by the Christians using a mixture of tales, some clearly coming from the East.

What if… (shit stirring incoming) what we now know as a god was once satan, and vice versa? How could a god like Enki being one of the key creators in his religion and later became associated with mischief? Religions spend a whole lot of effort discrediting the religion that was in place prior to it.

What if the only true one god is Aten and all the abrahamic stories came from the tales told by his followers?

Religion is fascinating, and the nasty effects of the centralization of spirituality are still felt centuries later?