Afterwards, his brother was born with his hand holding on to Esau’s heel, and so he was named Jacob [Heel]. Isaac was 60 years old when they were born.
Esau said, “Isn’t that why he’s named Jacob? He’s cheated me twice already: He took my rights as firstborn, and now he’s taken my blessing.” So he asked, “Haven’t you saved a blessing for me?”
“God gave Abraham circumcision to confirm his promise. So when Abraham’s son Isaac was born, Abraham circumcised him on the eighth day. Isaac did the same to his son Jacob, and Jacob did the same to his twelve sons (the ancestors of our tribes).