Genesis 13:14-16

14The LORD said to Abram after Lot had parted from him, “Look around from where you are, to the north and south, to the east and west. 15All the land that you see I will give to you and your offspring Or seed; also in verse 16 forever. 16I will make your offspring like the dust of the earth, so that if anyone could count the dust, then your offspring could be counted.