Genesis 25:19-23

King James Version

¹⁹ And these are the generations of Isaac, Abraham's son: Abraham begat Isaac:

²⁰ And Isaac was forty years old when he took Rebekah to wife, the daughter of Bethuel the Syrian of Padanaram, the sister to Laban the Syrian.

²¹ And Isaac intreated the Lord for his wife, because she was barren: and the Lord was intreated of him, and Rebekah his wife conceived.

²² And the children struggled together within her; and she said, If it be so, why am I thus? And she went to enquire of the Lord.

²³ And the Lord said unto her, Two nations are in thy womb, and two manner of people shall be separated from thy bowels; and the one people shall be stronger than the other people; and the elder shall serve the younger.