We proclaim to you what we have seen and heard, so that you also may have fellowship with us. And our fellowship is with the Father and with his Son, Jesus Christ.

Light and Darkness, Sin and Forgiveness

This is the message we have heard from him and declare to you: God is light; in him there is no darkness at all.

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

But if anyone obeys his word, love for God is truly made complete in them. This is how we know we are in him:

I write to you, dear children, because you know the Father. I write to you, fathers, because you know him who is from the beginning. I write to you, young men, because you are strong, and the word of God lives in you, and you have overcome the evil one.

The world and its desires pass away, but whoever does the will of God lives forever.

Warnings Against Denying the Son

Dear children, this is the last hour; and as you have heard that the antichrist is coming, even now many antichrists have come. This is how we know it is the last hour.

Who is the liar? It is whoever denies that Jesus is the Christ. Such a person is the antichrist—denying the Father and the Son.

No one who denies the Son has the Father; whoever acknowledges the Son has the Father also.

As for you, see that what you have heard from the beginning remains in you. If it does, you also will remain in the Son and in the Father.

God’s Children and Sin

And now, dear children, continue in him, so that when he appears we may be confident and unashamed before him at his coming.

See what great love the Father has lavished on us, that we should be called children of God! And that is what we are! The reason the world does not know us is that it did not know him.

Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when Christ appears, we shall be like him, for we shall see him as he is.

The one who does what is sinful is of the devil, because the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the devil’s work.

No one who is born of God will continue to sin, because God’s seed remains in them; they cannot go on sinning, because they have been born of God.

This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not God’s child, nor is anyone who does not love their brother and sister.

If anyone has material possessions and sees a brother or sister in need but has no pity on them, how can the love of God be in that person?

If our hearts condemn us, we know that God is greater than our hearts, and he knows everything.

Dear friends, if our hearts do not condemn us, we have confidence before God

And this is his command: to believe in the name of his Son, Jesus Christ, and to love one another as he commanded us.

The one who keeps God’s commands lives in him, and he in them. And this is how we know that he lives in us: We know it by the Spirit he gave us.

On Denying the Incarnation

Dear friends, 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.

This is how you can recognize the Spirit of God: Every spirit that acknowledges that Jesus Christ has come in the flesh is from God,

but every spirit that does not acknowledge Jesus is not from God. This is the spirit of the antichrist, which you have heard is coming and even now is already in the world.

You, dear children, are from God and have overcome them, because the one who is in you is greater than the one who is in the world.