Catena Aurea on John 7:19–24: John Chrysostom

Ye marvel, i. e. are disturbed, are in commotion. Observe how well He argues with them from the law. He wishes to prove that this work was not a violation of the law; and shews accordingly that there are many things more important than the law for the observance of the sabbath, by the observance of which that law is not broken but fulfilled. Moses therefore, He says, gave unto you circumcision, not because it is of Moses, but of the fathers, and ye on the sabbath day circumcise a man.