Genesis 25:19-24

19Now these are the records of the descendants of Isaac, Abraham’s son: Abraham was the father of Isaac.

20Isaac was forty years old when he married Rebekah, the daughter of Bethuel the Aramean (Syrian) of Paddan-aram, the sister of Laban the Aramean.

21Isaac prayed to the Lord for his wife, because she was unable to conceive children; and the Lord granted his prayer and Rebekah his wife conceived [twins].

22But the children struggled together within her [kicking and shoving one another]; and she said, “If it is so [that the Lord has heard our prayer], why then am I this way?” So she went to inquire of the Lord [praying for an answer].

23The Lord said to her, “[The founders of] two nations are in your womb; And the separation of two nations has begun in your body; The one people shall be stronger than the other; And the older shall serve the younger.”

24When her days to be delivered were fulfilled, behold, there were twins in her womb.