> You would be interested to know that Abraham lived at the time of the Gilgamesh epic, and he traveled widely telling his story.

Did he, though? There is archeological and contemporary written historical evidence of an actual Gilgamesh. Not so with Abraham.

The Abrahamic tradition was orally transmitted by a people who for generations lived in Babylonian captivity (1300 years after the earliest surviving copy of the Epic of Gilgamesh in Old Balylonian, with the earliest partial texts appearing 1600 years before), and was finally written down 3 generations after they left Babylon.