I noticed polysyndeton among the infinitives: καὶ ἤρξατο διδάσκειν αὐτοὺς ὅτι δεῖ τὸν υἱὸν τοῦ ἀνθρώπου πολλὰ παθεῖν καὶ ἀποδοκιμασθῆναι ὑπὸ τῶν πρεσβυτέρων καὶ τῶν ἀρχιερέων καὶ τῶν γραμματέων καὶ ἀποκτανθῆναι καὶ μετὰ τρεῖς ἡμέρας ἀναστῆναι·
This repetition gives some sense of amount, reflecting that πολλὰ.