1JN 2:19

19 They went forth from us, but they were not of us; for if they had been of us, they had dwelt with us; but that they be known, that they be not all of us. (They went out from us, but they were not of us; for if they had been of us, they would have remained with us; but now they be known, or but now it be known, that they be not of us.)