Genesis 15:2-4

Revised Standard Version

² But Abram said, “O Lord God, what wilt thou give me, for I continue childless, and the heir of my house is Elie′zer of Damascus?” ³ And Abram said, “Behold, thou hast given me no offspring; and a slave born in my house will be my heir.” ⁴ And behold, the word of the Lord came to him, “This man shall not be your heir; your own son shall be your heir.”