(My little children, I am writing these things to you so that you may not sin.) But if anyone does sin, we have an advocate with the Father, Jesus Christ the righteous One,

By this you know the Spirit of God: Every spirit that confesses Jesus as the Christ who has come in the flesh is from God,

If anyone confesses that Jesus is the Son of God, God resides in him and he in God.

Now who is the person who has conquered the world except the one who believes that Jesus is the Son of God?

What we have seen and heard we announce to you too, so that you may have fellowship with us (and indeed our fellowship is with the Father and with his Son Jesus Christ).

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

Who is the liar but the person who denies that Jesus is the Christ? This one is the antichrist: the person who denies the Father and the Son.

Now this is his commandment: that we believe in the name of his Son Jesus Christ and love one another, just as he gave us the commandment.

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

Everyone who believes that Jesus is the Christ has been fathered by God, and everyone who loves the father loves the child fathered by him.

Jesus Christ is the one who came by water and blood – not by the water only, but by the water and the blood. And the Spirit is the one who testifies, because the Spirit is the truth.

And we know that the Son of God has come and has given us insight to know him who is true, and we are in him who is true, in his Son Jesus Christ. This one is the true God and eternal life.