First reading
When Abram was ninety-nine years old, the Lord appeared to him and said: “I am God the Almighty. Walk in my presence and be blameless.”
God also said to Abraham: “On your part, you and your descendants after you must keep my covenant throughout the ages. This is my covenant with you and your descendants after you that you must keep: every male among you shall be circumcised.”
God further said to Abraham: “As for your wife Sarai, do not call her Sarai; her name shall be Sarah. I will bless her, and I will give you a son by her. Him also will I bless; he shall give rise to nations, and rulers of peoples shall issue from him.” Abraham prostrated himself and laughed as he said to himself, “Can a child be born to a man who is a hundred years old? Or can Sarah give birth at ninety?” Then Abraham said to God, “Let but Ishmael live on by your favor!” God replied: “Nevertheless, your wife Sarah is to bear you a son, and you shall call him Isaac. I will maintain my covenant with him as an everlasting pact, to be his God and the God of his descendants after him. As for Ishmael, I am heeding you: I hereby bless him. I will make him fertile and will multiply him exceedingly. He shall become the father of twelve chieftains, and I will make of him a great nation. But my covenant I will maintain with Isaac, whom Sarah shall bear to you by this time next year.” When he had finished speaking with him, God departed from Abraham.