Matthew 18:9

μονόφθαλμον. In classical Greek a distinction is made: the Cyclops or the Arimaspi (Hdt. III. 116) are μονόφθαλμοι. A man who has lost an eye is ἑτερόφθαλμος. Cp. Hdt. loc. cit. πείθομαι δὲ οὐδὲ τοῦτο, ὅκως μουνόφθαλμοι ἄνδρες φύονται.

τὴν γέενναν τοῦ πυρός. ‘The fiery Gehenna.’ This adjectival genitive may be paralleled from the classics: χόρτων εὐδένδρων Εὐρώπαν, Iph. in Taur. 134. See note ch. Matthew 5:22, and Donaldson, Greek Grammar, p. 481, for other instances. But the frequency of the usage in Hellenistic Greek is again attributable to the Hebrew idiom.