His concubine, whose name was Reumah, also bore him children -- Tebah, Gaham, Tahash, and Maacah.

But while he was still alive, Abraham gave gifts to the sons of his concubines and sent them off to the east, away from his son Isaac.

While Israel was living in that land, Reuben had sexual relations with Bilhah, his father's concubine, and Israel heard about it. Jacob had twelve sons:

Timna, a concubine of Esau's son Eliphaz, bore Amalek to Eliphaz. These were the sons of Esau's wife Adah.