Genesis 17:11

“And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.”

Genesis 17:14

“And the uncircumcised man child whose flesh of his foreskin is not circumcised, that soul shall be cut off from his peop...”

Genesis 17:23

“And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every ma...”

Genesis 17:24

“And Abraham was ninety years old and nine, when he was circumcised in the flesh of his foreskin.”

Genesis 17:25

“And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin.”