God said, *No, but Sarah, your wife, will bear you a son. You shall call his name Yitzchak. I will establish my covenant with him for an everlasting covenant for his seed after him.
God said to Avraham, *Don't let it be grievous in your sight because of the boy, and because of your handmaid. In all that Sarah says to you, listen to her voice. For from Yitzchak will your seed be called.
He said, *Now take your son, your only son, whom you love, even Yitzchak, and go into the land of Moriyah. Offer him there for a burnt offering on one of the mountains which I will tell you of.*
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.