1 Chronicles 1:28
The sons of Abraham; Isaac, and Ishmael.
Genesis 16:11-16
And the angel of the LORD said unto her, Behold, thou art with child, and shalt bear a son, and shalt call his name Ishmael; because the LORD hath heard thy affliction.
Genesis 17:19-21
And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt 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 bare 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, which she had born unto Abraham, mocking.
Genesis 21:12
And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy bondwoman; in all that Sarah hath said unto thee, hearken unto her voice; for in Isaac shall thy seed be called.