Genesis 15:1-6 NIV

1 After this, the word of the Lord came to Abram in a vision:

“Do not be afraid, Abram. I am your shield, your very great reward.”

2 But Abram said, “Sovereign Lord, what can you give me since I remain childless and the one who will inherit my estate is Eliezer of Damascus?” 3 And Abram said, “You have given me no children; so a servant in my household will be my heir.”

4 Then the word of the Lord came to him: “This man will not be your heir, but a son who is your own flesh and blood will be your heir.” 5 He took him outside and said, “Look up at the sky and count the stars—if indeed you can count them.” Then he said to him, “So shall your offspring be.”

6 Abram believed the Lord, and he credited it to him as righteousness.