1 John 2:19

ἐξ ἡμῶν ἐξῆλθον ἀλλ οὐκ ἦσαν ἐξ ἡμῶν εἰ γὰρ ἦσαν ἐξ ἡμῶν μεμενήκεισαν ἂν μεθ ἡμῶν ἀλλ ἵνα φανερωθῶσιν ὅτι οὐκ πάντες ἐξ ἡμῶν