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.
Look to Abraham, your ancestor, and to Sarah, from whom you are descended. When I called Abraham, he was childless. I blessed him and gave him many descendants.
The roster of families and households for the descendants of Judah listed the men by name who were at least 20 years old and eligible for military duty.
“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).
Faith enabled Abraham to become a father, even though he was old and Sarah had never been able to have children. Abraham trusted that God would keep his promise.