¹⁵ God said to Abraham, “As for your wife Sarai, you will no longer call her Sarai. Her name will now be Sarah. ¹⁶ I will bless her and even give you a son from her. I will bless her so that she will become nations, and kings of peoples will come from her.”

¹⁷ Abraham fell on his face and laughed. He said to himself, Can a 100-year-old man become a father, or Sarah, a 90-year-old woman, have a child? ¹⁸ To God Abraham said, “If only you would accept Ishmael!”

¹⁹ But God said, “No, your wife Sarah will give birth to a son for you, and you will name him Isaac.^[a] I will set up my covenant with him and with his descendants after him as an enduring covenant. ²⁰ As for Ishmael, I’ve heard your request. I will bless him and make him fertile and give him many, many descendants. He will be the ancestor of twelve tribal leaders, and I will make a great nation of him. ²¹ But I will set up my covenant with Isaac, who will be born to Sarah at this time next year.” ²² When God finished speaking to him, God ascended, leaving Abraham alone.

²³ Abraham took his son Ishmael, all those born in his household, and all those purchased with his silver—that is, every male in Abraham’s household—and he circumcised the flesh of their foreskins that same day, just as God had told him to do. ²⁴ Abraham was 99 years old when he circumcised the flesh of his foreskin, ²⁵ and his son Ishmael was 13 years old when the flesh of his foreskin was circumcised. ²⁶ That same day Abraham and his son Ishmael were circumcised. ²⁷ All the men of his household, those born in his household and those purchased with silver from foreigners, were circumcised with him.