After these things the word of Jehovah came to Abram in a vision, saying, Fear not, Abram; I am thy shield, thy exceeding great reward.
And Abram said, Lord Jehovah, what wilt thou give me? seeing I go childless, and the steward of my house is this Eliezer of Damascus.
References for Genesis 15:2
And Abram said, Lo, to me thou hast given no seed, and behold, a son of my house will be mine heir.
References for Genesis 15:3
And behold, the word of Jehovah [came] to him, saying, This shall not be thine heir, but he that will come forth out of thy body shall be thine heir.
References for Genesis 15:4