Moses
Genesis 17:10BSB·traditional attribution

This is My covenant with you and your descendants after you, which you are to keep: Every male among you must be circumcised.

John Calvin Reformed @genevareformer

10. Every man-child among you shall be circumcised Although God promised alike to males and females, what he afterwards sanctioned by circumcision, he nevertheless consecrated, in one sex, the whole people to himself. For whereas, by this symbol, the promise which was given, indiscriminately, to males and females, is confirmed, and it is certain that females as well as males had need of confirmation, it...

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The continuance of the covenant, intimated in three things: - 1. It is established; not to be altered nor revoked. It is fixed, it is ratified, it is made as firm as the divine power and truth can make it. 2.

Commenting on Genesis 17:7-14

John Gill Reformed Baptist @doctorgill

This is my covenant,.... The token of it, for the promise itself was given before, which is more properly the covenant; circumcision is so called in an improper sense, being only the sign of it: which ye shall keep between me and you, and thy seed after thee; which was to be observed by Abraham, and the males in his house then with him, as...