Who is a liar, but he that denieth that Jesus is Christ? The same is the antichrist that denieth the father and the son.

Whosoever denieth the son, the same hath not the father.

Let therefore abide in you that same which ye heard at the beginning. If that which ye heard at the beginning shall remain in you, then ye also shall continue in the son, and in the father.

And every spirit that confesseth not that Jesus Christ is come in the flesh, is not of God. And the same is that spirit of antichrist, of whom ye have heard, how that he should come: and even now already is he in the world.