Genesis 17:1-9

When Abram was ninety-nine years old, the LORD appeared to him and said, “I am God Almighty. Obey me and do what is right. I will make an agreement between us, and I will make you the ancestor of many people.” Then Abram bowed facedown on the ground. God said to him, “I am making my agreement with you: I will make you the father of many nations. I am changing your name from Abram to Abraham because I am making you a father of many nations. I will give you many descendants. New nations will be born from you, and kings will come from you. 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 God said to Abraham, “You and your descendants must keep this agreement from now on.