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19They went out from us, but they were not really of us; for if they had been of us, they would have remained with us; but they went out, so that it would be evident that they all are not of us. 20But you have an anointing from the Holy One, and you all know. 21I have not written to you because you do not know the truth, but because you do know it, and because no lie is of the truth.