Genesis 17:7-8, 18

And I will make an agreement between me and you and all your descendants from now on: I will be your God and the God of all your descendants. You live in the land of Canaan now as a stranger, but I will give you and your descendants all this land forever. And I will be the God of your descendants.”

Then Abraham said to God, “Please let Ishmael be the son you promised.”