Abraham, originally Sumerian but not Semitic
Abraham and his father Terah left Ur under control of Sumerians around 2000 BC when the Sumerian Kingdom was about to collapse.
It is as if the clan of Abraham had decided to flee from the falling kingdom of Sumerians. After the Sumerian dominance, a Semitic tribe, Akkad, occupied Mesopotamia. And then, Babylonia was established with its capital in Babylon around 1900 BC.
c. 2047–1940 BC (short chronology)But this city Babylon was not respected by descendants of Abraham:
Later, the 3rd dynasty of Ur under Ur-Nammu and Shulgi, whose power extended as far as southern Assyria, was the last great "Sumerian renaissance", but already the region was becoming more Semitic than Sumerian, with the resurgence of the Akkadian speaking Semites in Assyria and elsewhere, and the influx of waves of Semitic Martu (Amorites) who were to found several competing local powers in the south, including Isin, Larsa, Eshnunna and some time later Babylonia. The last of these eventually came to briefly dominate the south of Mesopotamia as the Babylonian Empire, just as the Old Assyrian Empire had already done so in the north from the late 21st century BC. The Sumerian language continued as a sacerdotal language taught in schools in Babylonia and Assyria, much as Latin was used in the Medieval period, for as long as cuneiform was utilized. https://en.wikipedia.org/wiki/Sumer
Babylonia, and particularly its capital city Babylon, has long held a place in the Abrahamic religions as a symbol of excess and dissolute power. Many references are made to Babylon in the Bible, both literally (historical) and allegorically. The mentions in the Tanakh tend to be historical or prophetic, while New Testament apocalyptic references to the Whore of Babylon are more likely figurative, or cryptic references possibly to pagan Rome, or some other archetype. The legendary Hanging Gardens of Babylon and the Tower of Babel are seen as symbols of luxurious and arrogant power respectively.
If Abraham and his clan had continued to stay around Ur after power shifted from Sumerians to Semitic Akkadians and Babylonians, they must have respected Babylon.
But as the Bible depicts Babylon as a symbol of corruption, it can be thought that Abraham and his clan hated the influence of Semitic dominance and accordingly they left Ur to eventually Canaan. It suggests that Abraham and his clan were originally Sumerian.
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Mar 8:25 After that he put his hands again upon his eyes, and made him look up: and he was restored, and saw every man clearly.
Mar 8:26 And he sent him away to his house, saying, Neither go into the town, nor tell it to any in the town.