Genesis 25:20-22

BRG Bible

²⁰ And Isaac was forty years old when he took Rebekah to wife, the daughter of Bethuel the Syrian of Padan-aram, 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.