¹⁹ Now these are the generations of Abraham's son Isaac:

² The son of Abraham was Isaac; and the son of Isaac was Jacob; and the sons of Jacob were Judah and his brothers;

³² And the sons of Keturah, Abraham's servant-wife: she was the mother of Zimran and Jokshan and Medan and Midian and Ishbak and Shuah. And the sons of Jokshan: Sheba and Dedan.

³⁴ The son of Jacob, the son of Isaac, the son of Abraham, the son of Terah, the son of Nahor,

⁸ And he made with him the agreement of which circumcision was the sign. And so Abraham had a son, Isaac, and gave him circumcision on the eighth day; and Isaac had a son, Jacob, and Jacob was the father of the twelve heads of the families of Israel.