>>20063078Yahweh worship existed before Genesis was even written. One of the prominent goals of the authors of Genesis must have been to disseminate the Abraham and Isaac narrative where it is explained that Yahweh no longer needs human sacrifice and instead prefers loyalty and obedience with circumcision being the ultimate sign of devotion whereas previously devotion would be demonstrated by sacrifice of the firstborn.
Some parts of the Exodus narrative were most likely written before Genesis was. There is no reason to assume a chronological order to the books. The books do not claim to be in chronological order. We can see that Exodus incorporated some of the earlier child sacrifice tradition here:
Exodus 22
>28. You do not revile gods, and you do not curse a prince among your people.>29. You do not delay your fullness and your liquids; you give the firstborn of your sons to Me;>30. so you do to your ox [and] to your sheep; it is with its mother [for] seven days, on the eighth day you give it to Me.Just as oxen and sheep were sacrificed on the 8th day, so were firstborn children.
It is notable that Genesis starts out "elohim-centric" and many (but not all) instances of Yahweh in Genesis must be later additions if we compare the Masoretic, Samaritan Pentateuch, and Septuagint. Exodus is all about Yahweh. This must reflect its older Yahwist origins. Genesis was likely written after the life of Plato judging by its literary content which copies Plato.
