If we say that we have fellowship with Him, and walk in darkness, we lie and do not practice the truth.

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him.

I have not written to you because you do not know the truth, but because you know it, and that no lie is of the truth.

Let Truth Abide in You

Therefore let that abide in you which you heard from the beginning. If what you heard from the beginning abides in you, you also will abide in the Son and in the Father.

My little children, let us not love in word or in tongue, but in deed and in truth.

And by this we know that we are of the truth, and shall assure our hearts before Him.

The Spirit of Truth and the Spirit of Error

Now he who keeps His commandments abides in Him, and He in him. And by this we know that He abides in us, by the Spirit whom He has given us.

We are of God. He who knows God hears us; he who is not of God does not hear us. By this we know the spirit of truth and the spirit of error.

The Certainty of God’s Witness

This is He who came by water and blood—Jesus Christ; not only by water, but by water and blood. And it is the Spirit who bears witness, because the Spirit is truth.