The sons of Keturah, Avraham's concubine: she bore Zimran, and Yokshan, and Medan, and Midyan, and Yishbak, and Shuach. The sons of Yokshan: Sheva, and Dedan.
He gave him the covenant of circumcision. So Avraham became the father of Yitzchak, and circumcised him the eighth day. Yitzchak became the father of Ya`akov, and Ya`akov became the father of the twelve patriarchs.