C. Matthew McMahon
Christian Preacher
Zipporah was out of line when she circumcised the son of Moses. She unlawfully administered the sacrament.
But if you were to take a look at the child afterwards, I don't think you would question whether or not circumcision had really been administered.
God Himself turned away His wrath after the improper circumcision, thus agreeing that a circumcision had truly been administered.
Not the same - households / individual synaogues (when they came around) administered those things in the OT (Passover and Circumcision).
Case in point, if Zipporah administered it wrongly, God would have been upset with her.