Genesis 15:6-8

And Abram trusted every word YAHWEH had spoken! And because of his faith, YAHWEH credited it to him as righteousness. Then he said to him, “I am YAHWEH, who brought you out of the Babylonian city of Ur, to give you all this land to possess.” But Abram said, “Lord YAHWEH, how can I be sure that I can possess this land for myself?”