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.”
But Abram said, “O Sovereign Lord, what can you give me since I remain childless and the one who will inherit my estate is Eliezer of Damascus?” And Abram said, “You have given me no children; so a servant in my household will be my heir.”
Then the word of the Lord came to him: “This man will not be your heir, but a son coming from your own body will be your heir.” He took him outside and said, “Look up at the heavens and count the stars—if indeed you can count them.” Then he said to him, “So shall your offspring be.” Genesis 15:1-5
And here we are.
And we still cannot count them.