Genesis 15:1-3

1Some time later, the Lord spoke to Abram in a vision and said to him, “Do not be afraid, Abram, for I will protect you, and your reward will be great.”

2But Abram replied, “O Sovereign Lord, what good are all your blessings when I don’t even have a son? Since you’ve given me no children, Eliezer of Damascus, a servant in my household, will inherit all my wealth.

3You have given me no descendants of my own, so one of my servants will be my heir.”