The sons of Keturah, Abraham's concubine: She bore Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. The sons of Jokshan: Sheba and Dedan.

Abraham begot Isaac, Isaac begot Jacob, and Jacob begot Judah and his brothers.

the son of Jacob, the son of Isaac, the son of Abraham, the son of Terah, the son of Nahor,

And He gave him the covenant of circumcision; and so Abraham begot Isaac and circumcised him on the eighth day; and Isaac begot Jacob, and Jacob begot the twelve patriarchs.