You yourselves are the heirs of the Prophets, and heirs, too, of the Covenant which God made with your ancestors, when he said to Abraham--'In your descendants will all the nations of the earth be blessed.'

Then God made with Abraham the Covenant of Circumcision; and under it Abraham became the father of Isaac, and circumcised him when he was eight days old; and Isaac became the father of Jacob; and Jacob of the Twelve Patriarchs.