Now I say this. A covenant confirmed beforehand by God in Messiah, the law, which came four hundred thirty years after, does not annul, so as to make the promise of no effect.
He gave him the covenant of circumcision. So Avraham became the father of Yitzchak, and circumcised him the eighth day. Yitzchak became the father of Ya`akov, and Ya`akov became the father of the twelve patriarchs.