Genesis 25:21-23

21And Isaac prayed to the Lord for his wife, because she was barren. And athe 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?”
Or  why do I live?
So she went cto inquire of the Lord.
23And the Lord said to her,

dTwo nations are in your womb,
and two peoples from within you
Or  from birth
shall be divided;
fthe one shall be stronger than the other,
gthe older shall serve the younger.”
Copyright information for ESV