Children, it is the last hour! As you have heard that antichrist is coming, so now many antichrists have come. From this we know that it is the last hour.
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 by going out they made it plain that none of them belongs to us.
But you have been anointed by the Holy One, and all of you have knowledge.
References for 1 John 2:20
I write to you, not because you do not know the truth, but because you know it, and you know that no lie comes from the truth.