Genesis 17:23-25

Amplified Bible, Classic Edition

²³ And Abraham took Ishmael his son and all who were born in his house and all who were bought with his money, every male among [those] of Abraham’s house, and circumcised [them] the very same day, as God had said to him.

²⁴ And Abraham was ninety-nine years old when he was circumcised.

²⁵ And Ishmael his son was thirteen years old when he was circumcised.