Genesis 25:19-26

19And these are the generations of Isaac, Abraham’s son: Abraham begat Isaac: 20and Isaac was forty years old when he took Rebekah, the daughter of Bethuel the Syrian of Paddan-aram, the sister of Laban the Syrian, to be his wife. 21And Isaac entreated Jehovah for his wife, because she was barren: and Jehovah was entreated of him, and Rebekah his wife conceived. 22And the children struggled together within her; and she said, If it be so, wherefore do I live? And she went to inquire of Jehovah. 23And Jehovah said unto her,

24And when her days to be delivered were fulfilled, behold, there were twins in her womb. 25And the first came forth red, all over like a hairy garment; and they called his name Esau. 26And after that came forth his brother, and his hand had hold on Esau’s heel; and his name was called Jacob: and Isaac was threescore years old when she bare them.