Genesis 25:20-28

20and Isaac was forty years old when he took Rebekah, the daughter of Bethuel the Aramean of Paddan-aram, the sister of Laban the Aramean, to be his wife.

21And Isaac prayed to the Lord for his wife, because she was barren. And the Lord granted his prayer, and Rebekah his wife conceived.

22The children struggled together within her, and she said, "If it is thus, why is this happening to me?" So she went to inquire of the Lord.

23And the Lord said to her, "Two nations are in your womb, and two peoples from within you shall be divided; the one shall be stronger than the other, the older shall serve the younger."

24When her days to give birth were completed, behold, there were twins in her womb.

25The first came out red, all his body like a hairy cloak, so they called his name Esau.

26Afterward his brother came out with his hand holding Esau's heel, so his name was called Jacob. Isaac was sixty years old when she bore them.

27When the boys grew up, Esau was a skillful hunter, a man of the field, while Jacob was a quiet man, dwelling in tents.

28Isaac loved Esau because he ate of his game, but Rebekah loved Jacob.