Richard carrier

enough said

One nice evidence is that there is no mention of the devil itself in the books before contact with babilonian people.
The 2 divinities idea comes from there, but as YHWH was already a supreme being, the evil divinity became the revel angel.
And that makes no sense because for a lot less YHWH obliterated cities, while the evil god is free to act XD

The "do unto others as you would have done to you" thingy is from Zoroastrianism.

Abraham was almost certainly a Zoroastrianist his monotheism and dualism come have come from almost no where else.
Abraham introduced the concept of angels again an element of Zoroastrianism (to be clear angels in the patriarchal stories of the bible do not have wings, that came from Egypt later Zoroastrianism's angels are shining beings who dress in black to dull their "glory" ) He popularised the God and Devil conflict from the twin deities of Ahura Mazda and Ahriman.
Many Zoroastrianist converted to Christianity believing him to be the second coming of Zarathustra who had foretold his return as the child of a virgin mother who would conceive after baptism in a sacred pool.
I think there is no question whatsoever that The house of Israel emerged from Zoroastrianism.

I actually really like Zoroastrianism as far as religions go.