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

Now Saul had a concubine named Rizpah daughter of Aiah. Ish-bosheth said to Abner, “Why did you have sexual relations with my father’s concubine?”

The sons to whom Keturah, Abraham’s concubine, gave birth: Zimran, Jokshan, Medan, Midian, Ishbak, Shuah. The sons of Jokshan: Sheba and Dedan.

Caleb’s concubine Ephah bore Haran, Moza, and Gazez. Haran was the father of Gazez.

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:

In those days Israel had no king. There was a Levite living temporarily in the remote region of the Ephraimite hill country. He acquired a concubine from Bethlehem in Judah.