τὸ πλῆθος οὐκ εὐαρίθμητον ἦν → the crowd wasn't easy to count, the crowd was not small, it was not a small crowd
τόνς: τούς, ἴδε -ονς ἐν Συναγωγῇ Λεξ. Ἀθησ. Κουμανούδη.