But God said, “No. Your wife Sarah will bear you a son and you will name him Isaac. I will keep my covenant with him and with his descendants forever. It is an everlasting covenant.
One of them said, “Nine months from now I will come back, and your wife Sarah will have a son.” Sarah was behind him, at the door of the tent, listening.
By faith he lived as a foreigner in the country that God had promised him. He lived in tents, as did Isaac and Jacob, who received the same promise from God.