TSK · Genesis 25:19

Abraham called his son who was born to him, whom Sarah bore to him, Isaac.

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

Abraham became the father of Isaac. Isaac became the father of Jacob. Jacob became the father of Judah and his brothers.

He gave him the covenant of circumcision. So Abraham became the father of Isaac, and circumcised him the eighth day. Isaac became the father of Jacob, and Jacob became the father of the twelve patriarchs.