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.

If we claim we have not sinned, we make him out to be a liar and his word is not in us.

My dear children, I write this to you so that you will not sin. But if anybody does sin, we have an advocate with the Father—Jesus Christ, the Righteous One.

Dear friends, I am not writing you a new command but an old one, which you have had since the beginning. This old command is the message you have heard.

I am writing to you, fathers, because you know him who is from the beginning. I am writing to you, young men, because you have overcome the evil one.

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.

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.

But you have an anointing from the Holy One, and all of you know the truth.

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

No one who lives in him keeps on sinning. No one who continues to sin has either seen him or known him.

Dear children, do not let anyone lead you astray. The one who does what is right is righteous, just as he is righteous.

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.

More on Love and Hatred

For this is the message you heard from the beginning: We should love one another.

Do not be like Cain, who belonged to the evil one and murdered his brother. And why did he murder him? Because his own actions were evil and his brother’s were righteous.

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.

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.

God’s Love and Ours

Dear friends, let us love one another, for love comes from God. Everyone who loves has been born of God and knows God.

This is how God showed his love among us: He sent his one and only Son into the world that we might live through him.

Dear friends, since God so loved us, we also ought to love one another.

No one has ever seen God; but if we love one another, God lives in us and his love is made complete in us.

There is no fear in love. But perfect love drives out fear, because fear has to do with punishment. The one who fears is not made perfect in love.

Who is it that overcomes the world? Only the one who believes that Jesus is the Son of God.