Genesis 15:2-3

Then Abram talked to God, and he called God by his special name Yahweh. He said, “Yahweh, you are very powerful. But look, I’ve got no son, so it doesn’t matter what you give me. You haven’t given me the one thing I really want. You haven’t given me any kids. So when I die, one of my work-men will get all my things. His name is Eliyezer. He is from Damascus.”