Genesis 17:1-8, 17-19

When Abram was ninety-nine years old, GOD showed up and said to him, “I am The Strong God, live entirely before me, live to the hilt! I’ll make a covenant between us and I’ll give you a huge family.” Overwhelmed, Abram fell flat on his face. Then God said to him, “This is my covenant with you: You’ll be the father of many nations. Your name will no longer be Abram, but Abraham, meaning that ‘I’m making you the father of many nations.’ I’ll make you a father of fathers—I’ll make nations from you, kings will issue from you. I’m establishing my covenant between me and you, a covenant that includes your descendants, a covenant that goes on and on and on, a covenant that commits me to be your God and the God of your descendants. And I’m giving you and your descendants this land where you’re now just camping, this whole country of Canaan, to own forever. And I’ll be their God.”

Abraham fell flat on his face. And then he laughed, thinking, “Can a hundred-year-old man father a son? And can Sarah, at ninety years, have a baby?” Recovering, Abraham said to God, “Oh, keep Ishmael alive and well before you!” But God said, “That’s not what I mean. Your wife, Sarah, will have a baby, a son. Name him Isaac (Laughter). I’ll establish my covenant with him and his descendants, a covenant that lasts forever.