Now Abraham was 99 years old when he was circumcised;

You must circumcise the flesh of your foreskins. This will be a reminder of the covenant between me and you.

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

Any uncircumcised male who has not been circumcised in the flesh of his foreskin will be cut off from his people – he has failed to carry out my requirement.”

They said to them, “We cannot give our sister to a man who is not circumcised, for it would be a disgrace to us.

Abraham took his son Ishmael and every male in his household (whether born in his house or bought with money) and circumcised them on that very same day, just as God had told him to do.