So he said, ‘Isn’t he rightly named Jacob? , For he has cheated me twice now. He took my birthright, and look, now he has taken my blessing.’ Then he asked, ‘Haven’t you saved a blessing for me? ’
and I will have you swear by the Lord, God of heaven and God of earth, that you will not take a wife for my son from the daughters of the Canaanites among whom I live,
When Isaac was old and his eyes were so weak that he could not see, he called his elder son Esau and said to him, ‘My son.’ And he answered, ‘Here I am.’