And the sons of Keturah, Abraham's concubine, [were] Zimram, Jokshan, Medan, Midian, Ishbak, and Shuah. And the sons of Jokshan [were] Dedan, and Sheba.

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,

Then 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.