1 Chronicles 1:28
The sons of Abraham: Isaak, and Ishmael.
Genesis 16:11-16
And the messenger of Jehovah will say to her, Behold, thou being great with child, and will bring forth a son, and shalt call his name Ishmael, for Jehovah listened to thy humiliation.
Genesis 17:19-21
And God will say. Truly, Sarah thy wife, shall bring forth to thee a son, and shall call his name Isaak: and I set up my covenant with him for a lasting covenant, and to his seed after him.
Genesis 21:2-5
And Sarah shall conceive, and bring forth to Abraham a son to his old age, at the appointed time which God spake to him.
Genesis 21:9-10
And Sarah will see the son of Hagar the Egyptian, which she brought forth to Abraham, laughing.
Genesis 21:12
And God will say to Abraham, It shall not be evil in thine eyes concerning the boy, and concerning thy maidservant; all which Sarah shall say to thee, hear to her voice; for in Isaak the seed shall be called to thee.