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

but whoever keeps His word, in him the love of God has truly been perfected. By this we know that we are in Him:

I have written to you, fathers, because you know Him who has been from the beginning. I have written to you, young men, because you are strong, and the word of God abides in you, and you have overcome the evil one.

They went out from us, but they were not really of us; for if they had been of us, they would have remained with us; but they went out, so that it would be shown that they all are not of us.

These things I have written to you concerning those who are trying to deceive you.

See how great a love the Father has bestowed on us, that we would be called children of God; and such we are. For this reason the world does not know us, because it did not know Him.

Beloved, now we are children of God, and it has not appeared as yet what we will be. We know that when He appears, we will be like Him, because we will see Him just as He is.

By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother.

We will know by this that we are of the truth, and will assure our heart before Him

and whatever we ask we receive from Him, because we keep His commandments and do the things that are pleasing in His sight.

Beloved, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world.

You are from God, little children, and have overcome them; because greater is He who is in you than he who is in the world.

They are from the world; therefore they speak as from the world, and the world listens to them.

We are from God; he who knows God listens to us; he who is not from God does not listen to us. By this we know the spirit of truth and the spirit of error.

By this, love is perfected with us, so that we may have confidence in the day of judgment; because as He is, so also are we in this world.

For this is the love of God, that we keep His commandments; and His commandments are not burdensome.

For there are three that testify:

the Spirit and the water and the blood; and the three are in agreement.

We know that we are of God, and that the whole world lies in the power of the evil one.

And we know that the Son of God has come, and has given us understanding so that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life.