1 Chronicles 1:28
The sons of Abraham: Isaac and Ishmael.
Genesis 16:11-16
And the Angel of Jehovah said to her, Behold, you are with child, and shall bear a son. And you shall call his name Ishmael, because Jehovah has heard your affliction.
Genesis 17:19-21
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 seed after him.
Genesis 21:2-5
For Sarah conceived and bore Abraham a son in his old age, at the set time of which God had spoken to him.
Genesis 21:9-10
And Sarah saw the son of Hagar the Egyptian (whom she had borne to Abraham) mocking.
Genesis 21:12
And God said to Abraham, Let it not be grievous in your sight because of the boy and because of your slave woman. In all that Sarah has said to you, listen to her voice. For in Isaac your Seed shall be called.