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.
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. However, they went out so that it might be made clear that none of them belongs to us.
1 John 2:19 In-Context
The world and its desires pass away, but whoever does the will of God lives forever.
Dear children, this is the last hour; and as you have heard that the antichrist is coming, even now many antichrists have come. This is how we know it is the last hour.
They went out from us, but they did not really belong to us. For if they had belonged to us, they would have remained with us; but their going showed that none of them belonged to us.
But you have an anointing from the Holy One, and all of you know the truth.
I do not write to you because you do not know the truth, but because you do know it and because no lie comes from the truth.