οἱ δέ τινες καὶ περιοικοδομηθέντες ἐν τοῦ Διονύσου τῷ ἱερῷ ἀπέθανον

From LSJ

οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass

Source