Afterward his brother came out with his hand holding on to Esau’s heel, so he was named Jacob; and Isaac was sixty years old when she gave birth to them.
Of the sons of Judah, their descendants by their families, by their fathers’ households, according to the number of names, from twenty years old and upward, whoever was able to go to war,
And He gave him the covenant of circumcision; and so Abraham fathered Isaac, and circumcised him on the eighth day; and Isaac fathered Jacob, and Jacob, the twelve patriarchs.