I Coríntios, 14

11. ἐὰν οὗν μὴ εἰδῶ τὴν δύναμιν τῆς φωνῆς, ἔσομαι τῶ λαλοῦντι βάρβαρος καὶ ὁ λαλῶν ἐν ἐμοὶ βάρβαρος.