Terah, the father of Abraham wasn't some nomadic sheepherder.
Terah was a stargazer. He saw in the stars that
Haran would be burned and that from Abraham the world would be filled.
Shocher
Tov 9:7.
And Terah the son of Nahor, prince of Nimrod's host,
was in those days very great in the sight of the king and his subjects, and the
king and princes loved him, and they elevated him very high.
Book of Jasher
8;49-51.
And he placed Terah the son of Nahor the prince of his host, and he dignified
him and elevated him above all his princes.
Book of Jasher 7;41