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.
Berean Study Bible (BSB) - 1 John 2:19 >They went out from us, but they did not belong to us. For if they had belonged to us, they would have remained with us. But their departure made it clear that none of them belonged to us.
Textus Receptus (TR) - 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 εἰσὶ πάντες ἐξ ἡμῶν.