By this you know the Spirit of God: Every spirit that confesses Jesus Christ has come in the flesh, is from God. And every spirit that does not confess Jesus, is not from God: and this is that spirit of antichrist, which you have heard that it comes, and now is in the world already.

Whoever will confess that Jesus is the Son of God, God abides in him, and he in God.

Every one who believes that Jesus is the Christ, has been begotten by God; and every one who loves the begetter, loves also the begotten by him.

but the unction which you have received from him abides in you; and you have no need that any one should teach you, unless the same unction teaches you concerning all things, and is truth, and is no lie: and as it has taught you, you will abide in him.

But if we walk in the light, as he is in the light; we have fellowship with one another, and the blood of Jesus Christ the Son cleanses us from all sin.

Besides, to this you were called; for even Christ suffered for us, leaving us a pattern, that you should follow his footsteps;

He who says he abides in him, ought, himself, also, so to walk even as he walked.

And by this, we know that we have known him, if we keep his commandments. He who says, I have known him, and does not keep his commandments, is a liar, and the truth is not in this man. But whoever keeps his word, truly in this man the love of God is perfected. By this we know that we are in him.

Beloved, do not believe every spirit, but try the spirits, whether they be from God; because many false prophets are gone forth into the world.

But there were also false prophets among the people, even as there will be false teachers among you; who will privately introduce destructive sects, denying even the Lord who bought them, bringing on themselves swift destruction. And many will follow their lewd practices, on account of whom, they way of truth will be evil spoken of.

If we say we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just to forgive our sins, and to cleanse us from all unrighteousness. If we say that we have not sinned, we make him a liar, and his word is not in us.