And this is the message which we have heard from him and announce to you, that God is light and there [is] no darkness in him at all.

And by this we know that we have come to know him, if we keep his commandments.

The one who says "I have come to know him," and does not keep his commandments is a liar, and the truth is not in this person.

But whoever keeps his word, truly in this person the love of God has been perfected. By this we know that we are in him.

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

And this is the promise which he himself promised us: eternal life.

See what sort of love the Father has given to us: that we should be called children of God, and we are! Because of this the world does not know us: because it did not know him.

And everyone who has this hope in him purifies himself, just as that one is pure.

The one who practices sin is of the devil, because the devil has been sinning from the beginning. For this [reason] the Son of God was revealed: in order to destroy the works of the devil.

By this the children of God and the children of the devil are evident: everyone who does not practice righteousness is not of God, namely, the one who does not love his brother.

For this is the message that you have heard from the beginning: that we should love one another,

We have come to know love by this: that {he} laid down his life on behalf of us, and we ought to lay down our lives on behalf of the brothers.

By this we know that we are of the truth and will convince our heart before him,

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

And the one who keeps his commandments resides in him, and he in him. And by this we know that he resides in us: by the Spirit whom he has given to us.

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

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

We are from God. The one who knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of deceit.

By this the love of God is revealed in us: that God sent his one and only Son into the world in order that we may live through him.

In this is love: not that we have loved God, but that he loved us and sent his Son [to be the] propitiation for our sins.

Dear friends, if God loved us in this way, we also ought to love one another.

By this we know that we reside in him and he in us: that he has given us of his Spirit.

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

And this [is] the commandment we have from him: that the one who loves God should love his brother also.

By this we know that we love the children of God: whenever we love God and keep his commandments.

For this is the love of God: that we keep his commandments. And his commandments are not burdensome,

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

If we receive the testimony of people, the testimony of God is greater, because this is the testimony of God that he has testified concerning his Son.

And this is the testimony: that God has given us eternal life, and this life is in his Son.

And this is the confidence that we have before him: that if we ask anything according to his will, he hears us.

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