And Isaac was a son of forty years when he took Rebekah, the daughter of Bethuel the Aramean from Padan-aram, the sister of Laban the Aramean, to him for a wife.
And the sons of Keturah, Abraham’s concubine: she bore Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. And the sons of Jokshan were Sheba and Dedan.
And He gave to him a covenant of circumcision; and so he fathered Isaac and circumcised him on the eighth day. And Isaac fathered Jacob, and Jacob the twelve patriarchs.