1My 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. 2He is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.

Love and Hatred for Fellow Believers

3We know that we have come to know him if we keep his commands. 4Whoever says, “I know him,” but does not do what he commands is a liar, and the truth is not in that person. 5But if anyone obeys his word, love for God^a is truly made complete in them. This is how we know we are in him: 6Whoever claims to live in him must live as Jesus did.

7Dear 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. 8Yet I am writing you a new command; its truth is seen in him and in you, because the darkness is passing and the true light is already shining.

9Anyone who claims to be in the light but hates a brother or sister^b is still in the darkness. 10Anyone who loves their brother and sister^c lives in the light, and there is nothing in them to make them stumble. 11But anyone who hates a brother or sister is in the darkness and walks around in the darkness. They do not know where they are going, because the darkness has blinded them.

Reasons for Writing

On Not Loving the World

15Do not love the world or anything in the world. If anyone loves the world, love for the Father^d is not in them. 16For everything in the world—the lust of the flesh, the lust of the eyes, and the pride of life—comes not from the Father but from the world. 17The world and its desires pass away, but whoever does the will of God lives forever.

Warnings Against Denying the Son

18Dear 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. 19They went out from us, but they did not really belong to us. For if they had belonged to us, they would have remained with us; but their going showed that none of them belonged to us.

20But you have an anointing from the Holy One, and all of you know the truth.^e 21I do not write to you because you do not know the truth, but because you do know it and because no lie comes from the truth. 22Who is the liar? It is whoever denies that Jesus is the Christ. Such a person is the antichrist—denying the Father and the Son. 23No one who denies the Son has the Father; whoever acknowledges the Son has the Father also.

24As 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. 25And this is what he promised us—eternal life.

26I am writing these things to you about those who are trying to lead you astray. 27As for you, the anointing you received from him remains in you, and you do not need anyone to teach you. But as his anointing teaches you about all things and as that anointing is real, not counterfeit—just as it has taught you, remain in him.

God’s Children and Sin

28And now, dear children, continue in him, so that when he appears we may be confident and unashamed before him at his coming.

29If you know that he is righteous, you know that everyone who does what is right has been born of him.

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Footnotes:
a 5 Or word, God’s love
b 9 The Greek word for brother or sister (adelphos) refers here to a believer, whether man or woman, as part of God’s family; also in verse 11; and in 3:15, 17; 4:20; 5:16.
c 10 The Greek word for brother and sister (adelphos) refers here to a believer, whether man or woman, as part of God’s family; also in 3:10; 4:20, 21.
d 15 Or world, the Father’s love
e 20 Some manuscripts and you know all things