1When Abram was 99 years old, the Lord appeared to him. The Lord said, “I am God All-Powerful. Do these things for me: Obey me and live the right way. 2If you do this, I will prepare an agreement between us. I will promise to make your people a great nation.” 3Then Abram bowed down before God. God said to him, 4“This is my part of our agreement: I will make you the father of many nations. 5I will change your name. Your name will not be Abram—your name will be Abraham. I give you this name because I am making you the father of many nations. 6I will give you many, many descendants. New nations and kings will come from you. 7And I will prepare an agreement between you and me. This agreement will also be for all your descendants. This agreement will continue forever. I will be your God and the God of all your descendants. 8And I will give this land to you and to all your descendants. I will give you the land you are traveling through—the land of Canaan. I will give you this land forever. And I will be your God.” 9And God said to Abraham, “Now, this is your part of the agreement. You and all your descendants will obey my agreement. 10This is the agreement that you will obey. This is the agreement between you and me. This is for all your descendants: Every boy that is born must be circumcised. 11You will cut the skin to show that you follow the agreement between me and you. 12When the baby boy is eight days old, you will circumcise him. Every boy born among your people and every boy that is a slave of your people must be circumcised. 13So every baby boy in your nation will be circumcised. Every boy that is born from your family or bought as a slave will be circumcised. 14Abraham, this is the agreement between you and me: Any male that is not circumcised will be cut off from his people. Why? Because that person has broken my agreement.” 15God said to Abraham, “I will give Sarai, your wife, a new name. Her new name will be Sarah. 16I will bless her. I will give her a son, and you will be the father. She will be the mother of many new nations. Kings of nations will come from her.” 17Abraham bowed his face to the ground to show he respected God. But he laughed and said to himself, “I am 100 years old. I can’t have a son. And Sarah is 90 years old. She can’t have a child.” 18Then Abraham said to God, “I hope Ishmael will live and serve you.” 19God said, “No! I said that your wife Sarah will have a son. You will name him Isaac. I will make my agreement with him. That agreement will be an agreement that continues forever with all his descendants. 20“You mentioned Ishmael, and I heard you. I will bless him. He will have many children. He will be the father of twelve great leaders. His family will become a great nation. 21But I will make my agreement with Isaac. Isaac will be the son that Sarah will have. This son will be born at this same time next year.” 22After God finished talking with Abraham, God went up into heaven. 23Then Abraham gathered Ishmael and all the slaves born in his house together. Abraham also gathered together the slaves that were bought with money. Every man and boy in Abraham’s house was gathered together, and they were all circumcised. Abraham circumcised them that day, just as God told him. 24Abraham was 99 years old when he was circumcised. 25And Ishmael, his son, was 13 years old when he was circumcised. 26Abraham and his son were circumcised on that same day. 27Also, on that day all the men in Abraham’s house were circumcised. All the slaves born in his house and all the slaves that he had bought were circumcised.