The part that needs a citation is the assertion that the church invented it.
That was your own reference. The one you said was reputable.
as far as El being the Ugarit pantheon father. This was never disputed by me. Fact: this God was Abrahams God known as Elshaddai. The God was later known as yahweh
Absolutely not true. Yahweh was around when El was, only later, when Yahweh became the primary god for the Hebrew semitic peoples was he backported to El.
This God had at least one prophet he spoke to who wasn't in the tribe of Israel. In numbers 22 balaam lives in Pethor. This suggests that the God had other prophets in the area who weren't Israelites. so it would seem there were others besides Israelites who accepted the God El as their God. Just because the gods worship was changed or evolved does not make it a new God.
Well... no. That doesn't even make sense. What IS true is that that story was written LONG after the purported events were supposed to have happened (which, by the way, most certainly did NOT happen). Yahweh have already been backported to be the supreme god by then, mixed with El.
It is an inescapable FACT that El and Yahweh were separated and that Yahweh eventually, in Hebrew semitic culture, was fused with El, but ONLY there. That is a well supported and demonstrable thing, your own sources agree.
In arguing this I would submit that the surrounding nations evolved the God into something completely different from its original preserved by Melchizadek. So that THEY took on a new God, while Israel preserved the original.
Except that's the opposite of every piece of evidence, including your sources that you said were reputable.
But this is a theological argument, not a historical one.
No, that's a historical argument. A historical argument, such as this, is how gods evolved in culture. A theological argument would be whether or not that god was real.
From history we can assert that El was Abrahams God, that Melchizadek was this gods priest and this priest blessed Abraham. Then Abraham passed the worship of this God alone onto his descendants.
That's fine. History also shows that the Hebrew semitic peoples also backported their God into El, making him more important and powerful than he was (and also divorcing his wife).
catholics worship differently. Jehovah's witnesses worship differently. Protestants worship differently. Do they worship the same God? Yes.
That's not a modern day example. At all.