Many books were left out of the Biblical canon. Some because they had no relation to the Messiah, being the purpose of the cannon. Others because of the miracles done by Jesus and tried to weave his authority it into their mysticism handed down through Sumer, where some had claimed to be the decedent of Gods (or angels) that came down before the flood and taught man the secrets of heaven and earth. Egypt, Greece, and Rome, shared multiple gods that war and killed each other. Many such gods were renamed, in and their attributes were often reassigned to a different deity in subsequent religions. But there is a common thread and many similarities handed down and borrowed between the different peoples of such ancient religions. Such as starting with 2 primordial gods, often male and female, symbolized as saltwater and fresh that mingled and created lesser gods. They read as their side of the Hebrew fallen angels story who taught them about war, makeup, agriculture, animal breeding, and more.
Their side of the flood story concerns the first two sons Enlil, who sided with his father to destroy all men with the flood, but Enki, so not to disobey telling man of the royal decree made it so Gilgamesh overheard him speak of it and we have another version of the Ark story.
Not my field but there is scholarly research tracing the different gods back through ancient empires. Mysticism was rampant everywhere as sacred knowledge. Even the Bible mentions a talisman possibly being the firstborn, sacrificed and the head is kept with a coin in the mouth that could then reveal things to the father. Was taken by a daughter so the Father could not see or know where they had fled (Gen 31:19, 32-35).
Not my field of expertise in any way. The above comes from others according to archeological texts and research. I’m just sharing a summary of mostly non-biblical research I have come across. I really can’t answer anything regarding conclusions as I’m sure I’ve likely butchered this topic somewhere. If you trace back Wiccan practices, most are centered on Egyptian or Sumer (later Babalon) gods and teachings.