Genesis 15:4
Behold, the LORD’s word came to him, saying, “This man will not be your heir, but he who will come out of your own body will be your heir.”
World English Bible (Public Domain)
In context
Before · Genesis 15:2–3
2Abram said, “Lord GOD, what will you give me, since I go childless, and he who will inherit my estate is Eliezer of Damascus?” 3Abram said, “Behold, you have given no children to me: and, behold, one born in my house is my heir.”
4Behold, the LORD’s word came to him, saying, “This man will not be your heir, but he who will come out of your own body will be your heir.”