Was the Hebrew God unique?

The God of the OT was not considered all powerful or all knowing. The depictions of God though change as the tales of the Bible were written. Over time, the depiction of God changed from one of many and restricted by local and peoples to some more universal being. But even today there are aspects of omniscient and omnipotent that cannot be reconciled with other aspects of God and so it is not something universally accepted even within Christianity.

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Aslan is not a Tame Lion

If you look at the God of Genesis 1 you can see that sort of God, although even there He is lacking foreknowledge. The God of Genesis 2 is quite different. In Genesis 2 for example He doesn't know what would make a suitable companion for Adam, even though it appears that he made the other critters in pairs. He doesn't know where the kiddies are hiding, who told them to eat of the tree of knowledge, fears what might happen if the also eat from the tree of life and has to put angels at the gates to keep folk out. It realy never happens in the Bible. Remember that all we get are glimpses of how God is seen by given people or peoples at particular moments. The idea of all seeing, all knowing, all powerful and with all foreknowledge is a fairly modern one and while often simply tossed out there, one that I have never seen supported without creating a God or cruelty and denying free will.

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Aslan is not a Tame Lion

Again you seem to be asking two different questions, whether the Hebrews saw thier God as Universal, the One God, and whether the idea of a Universal God was unique.For the former, the answer is that for most of the OT the Hebrews did not see God as either universal or as the only God. He was their God, and in their eyes, certainly first among equals.As to the later question, almost every religion has examples of their God being universal in some fashion where it is Neptune stiring the seas or Atum creating order from chaos.

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Aslan is not a Tame Lion

I think we do need to keep in mind that when we are talking about gods, hebrew, biblical christian or otherwise we are talking about the human perception of GOD by that people in that era and not really about GOD.The God of Genesis 2 & 3, and in other places in the OT, is very much like Zeus or other Gods of the folk at around that time, around that location. He is a very human character, walks around and talks with folk, is somewhat bumbling, makes mistakes, works on trial and error. He is super-human, but simply bigger and smarter and more powerful, but still with weaknesses and foibles.The God of Genesis 1 is quite different, transcendant, sure, moving without error or hesitation through the acts of creation, then stopping, resting and admiring what had been done.But we have to acknowledge that what we are looking at is not GOD but just how a particular people at a particular time saw their God. Absolutely. And we also need to remember that for most of the Old Testament we are looking at a polytheistic world. Even the Hebrews believed in other Gods, feared and respected them.

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Aslan is not a Tame Lion

Actually I think Abba is Swedish.

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Aslan is not a Tame Lion