ἐν σφίσι κατὰ τὰς ἰδίας διαφορὰς περιπεσόντες ἐσφάλησαν

From LSJ

εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin

Source

English > Greek (Woodhouse Quotes Reversed)

they were ruined by falling a prey to personal quarrels