God said, “No, but your wife Sarah shall bear you a son, and you shall name him Isaac. I will establish my covenant with him as an everlasting covenant for his offspring after him.
But God said to Abraham, “Do not be distressed because of the boy and because of your slave woman; whatever Sarah says to you, do as she tells you, for it is through Isaac that offspring shall be named for you.
He said, “Take your son, your only son Isaac, whom you love, and go to the land of Moriah and offer him there as a burnt offering on one of the mountains that I shall show you.”
Then he gave him the covenant of circumcision. And so Abraham became the father of Isaac and circumcised him on the eighth day, and Isaac did likewise to Jacob and Jacob to the twelve patriarchs.