²³ Then Abraham gathered together Ishmael and all the slaves born in his house. He also gathered all the slaves he had bought. Every man and boy in Abraham’s house was gathered together, and they were all circumcised. Abraham circumcised them that day, just as God had told him to do.

²⁴ Abraham was 99 years old when he was circumcised. ²⁵ And Ishmael, his son, was 13 years old when he was circumcised.