John Chrysostom
And note what they say: "By what name have you done this? Then Peter, filled with the Holy Spirit, said to them." Now remember Christ's words and how what He said was fulfilled: "When they bring you before synagogues, rulers, and authorities, do not be anxious how or what you should answer, or what you should say; for the Holy Spirit will teach you in that very hour what you ought to say" (Lk 12:11-12; cf. Mt 10:19). Therefore they were already enjoying great help from God. Listen, then, to what Peter says. "Rulers of the people and elders of Israel!" Observe the man's love of wisdom. Though filled with boldness, he says nothing insulting, but speaks respectfully.