Genesis 17

1When Abram was ninety-nine, the LORD appeared to him and said, “I am God Almighty. Live your life before me and be wholehearted, 2so that I may confirm my covenant between me and you and greatly increase your descendants.” 3Abram fell face down, and God said to him, 4“Here is my covenant with you, from my side: you will become the father of many nations. 5Your name will no longer be Abram. From now on it is Abraham, since I have made you a father of many nations. 6I will make you abundantly fruitful; nations will come from you, and kings will be among your descendants. 7I will keep my covenant with you and your descendants after you for generations to come, as an everlasting covenant: I will be your God and the God of your descendants after you. 8I will give you and your descendants after you all the land of Canaan, the land where you are now a foreigner, to hold for all time, and I will be their God.” 9God also said to Abraham, “Your part is to keep my covenant, you and your descendants after you in every generation. 10Here is the covenant you and your descendants are to keep with me: every male among you is to be circumcised. 11You are to cut away the flesh of your foreskin, and it will be the sign of the covenant between me and you. 12Every male among you who is eight days old must be circumcised, generation after generation, including slaves born in your household or bought with money from a foreigner who is not one of your descendants. 13Every one of them, whether born in your household or bought with your money, must be circumcised. So my covenant will be in your flesh, a covenant for all time. 14A male who is not circumcised in the flesh of his foreskin is to be cut off from his people. He has broken my covenant.”

15God said further to Abraham, “Your wife is not to be called Sarai any more. Sarah is her name. 16I will bless her and give you a son through her as well. I will bless her, and nations will come from her; kings of peoples will be among her descendants.” 17Abraham bowed face down, but he laughed and said to himself, “Can a man a hundred years old become a father? Can Sarah have a baby at ninety?” 18And Abraham said to God, “Oh, let Ishmael be the one who lives in your favor!” 19God replied, “No. Your wife Sarah will have a son by you, and you will name him Isaac. With him I will establish my covenant, a covenant for all time with his descendants after him. 20I have heard your prayer for Ishmael too. I will bless him, give him many children and multiply his descendants greatly. He will be the father of twelve chieftains, and I will make a great nation of him. 21But it is with Isaac, the son Sarah will bear you about this time next year, that I will establish my covenant.” 22When God had finished speaking with Abraham, he went up and left him. 23Abraham did it the same day. He took his son Ishmael and every male of his household, whether born there or bought with his money, and circumcised them, as God had told him. 24Abraham was ninety-nine when the flesh of his foreskin was cut away, 25and his son Ishmael was thirteen when he was circumcised. 26So Abraham and Ishmael were circumcised together that very day, 27together with all the men of his household, the slaves born in his house and those bought from foreigners.