These are the descendants of Isaac, Abraham's son: Abraham was the father of Isaac,
and Isaac was forty years old when he married Rebekah, daughter of Bethuel the Aramean of Paddan-aram, sister of Laban the Aramean.
Isaac prayed to the Lord for his wife, because she was barren; and the Lord granted his prayer, and his wife Rebekah conceived.
The children struggled together within her; and she said, "If it is to be this way, why do I live?" So she went to inquire of the Lord.
References for Genesis 25:22
And the Lord said to her, "Two nations are in your womb, and two peoples born of you shall be divided; the one shall be stronger than the other, the elder shall serve the younger."
When her time to give birth was at hand, there were twins in her womb.
The first came out red, all his body like a hairy mantle; so they named him Esau.
Afterward his brother came out, with his hand gripping Esau's heel; so he was named Jacob. Isaac was sixty years old when she bore them.
References for Genesis 25:26
When the boys grew up, Esau was a skillful hunter, a man of the field, while Jacob was a quiet man, living in tents.
Isaac loved Esau, because he was fond of game; but Rebekah loved Jacob.
Once when Jacob was cooking a stew, Esau came in from the field, and he was famished.