Given your lack of documentation, this is all a stretch. Why not just say that the Israelites reinterpreted the story in the light of a new insight or, if you will concede, the revelation of a creator God who cares for his people. If there is any consistent story line in the Bible it is that of a people whose identity is establisheded by disentangling themselves from the mythology of the other peoples of the religion. Only the religion of the Persians follows such a progressive path , unless we include the theology of the Greek Philosophers, so we find them converging and conflicting by the time of Christ.
Maybe you're right. Maybe this is all a stretch. Of course if you want to know for sure, you could spend a handful of years studying the subject from a historical and archaeological viewpoint.