And God said, Sarah your wife shall bear you a son indeed; and you shall call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his descendants after him.
And the angel of the LORD said unto her, Behold, you are with child, and shall bear a son, and shall call his name Ishmael; because the LORD has heard your affliction.
And I will bless her, and give you a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall come from her.
And I will establish my covenant between me and you and your descendants after you in their generations for an everlasting covenant, to be a God unto you, and to your descendants after you.
Sojourn in this land, and I will be with you, and will bless you; for unto you, and unto your descendants, I will give all these countries, and I will perform the oath which I swore unto Abraham your father;
And the bow shall be in the cloud; and I will look upon it, that I may remember the everlasting covenant between God and every living creature of all flesh that is upon the earth.
Through faith also Sara herself received strength to conceive, and was delivered of a child when she was past age, because she judged him faithful who had promised.