Gen 25:19-24

19 These are the descendants of Isaac, Abraham’s son: Abraham was the father of Isaac, 20 and Isaac was forty years old when he married Rebekah, daughter of Bethuel the Aramean of Paddan-aram, sister of Laban the Aramean. 21 Isaac prayed to the Lord for his wife, because she was barren; and the Lord granted his prayer, and his wife Rebekah conceived. 22 The children struggled together within her; and she said, “If it is to be this way, why do I live?”[a] So she went to inquire of the Lord. 23 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.” 24 When her time to give birth was at hand, there were twins in her womb.