Ἐξ ἡμῶν ἐξῆλθον, ἀλλ' οὐκ ἦσαν ἐξ ἡμῶν· εἰ γὰρ ἦσαν ἐξ ἡμῶν, μεμενήκεισαν ἂν μεθ' ἡμῶν· ἀλλ' ἵνα φανερωθῶσιν ὅτι οὐκ εἰσὶν πάντες ἐξ ἡμῶν.
They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us.
Salieron de entre nosotros, pero no eran de los nuestros. Si hubieran sido de los nuestros, se habrían quedado con nosotros; pero su salida reveló que ninguno de ellos era de los nuestros.