Genesis 25:19-23

Now these are the records of the generations of Isaac, Abraham’s son: Abraham fathered Isaac;

and 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.

Isaac prayed to the Lord on behalf of his wife, because she was unable to have children; and the Lord answered him, and his wife Rebekah conceived.

But the children struggled together within her; and she said, “If it is so, why am I in this condition?” So she went to inquire of the Lord.

And the Lord said to her, “Two nations are in your womb; And two peoples will be separated from your body; And one people will be stronger than the other; And the older will serve the younger.”