1My little children, I write these things to you so that you may not sin. If anyone sins, we have a Counselor with the Father, Jesus Christ, the righteous. 2And he is the atoning sacrifice for our sins, and not for ours only, but also for the whole world. 3This is how we know that we know him: if we keep his commandments. 4One who says, “I know him,” and doesn’t keep his commandments, is a liar, and the truth isn’t in him. 5But God’s love has most certainly been perfected in whoever keeps his word. This is how we know that we are in him: 6he who says he remains in him ought himself also to walk just like he walked.
7Brothers, I write no new commandment to you, but an old commandment which you had from the beginning. The old commandment is the word which you heard from the beginning. 8Again, I write a new commandment to you, which is true in him and in you, because the darkness is passing away and the true light already shines. 9He who says he is in the light and hates his brother is in the darkness even until now. 10He who loves his brother remains in the light, and there is no occasion for stumbling in him. 11But he who hates his brother is in the darkness, and walks in the darkness, and doesn’t know where he is going, because the darkness has blinded his eyes.
12I write to you, little children, because your sins are forgiven you for his name’s sake.
13I write to you, fathers, because you know him who is from the beginning.
I write to you, young men, because you have overcome the evil one.
I write to you, little children, because you know the Father.
14I have written to you, fathers, because you know him who is from the beginning.
I have written to you, young men, because you are strong, and the word of God remains in you, and you have overcome the evil one.
15Don’t love the world or the things that are in the world. If anyone loves the world, the Father’s love isn’t in him. 16For all that is in the world—the lust of the flesh, the lust of the eyes, and the pride of life—isn’t the Father’s, but is the world’s. 17The world is passing away with its lusts, but he who does God’s will remains forever.
18Little children, these are the end times, and as you heard that the Antichrist is coming, even now many antichrists have arisen. By this we know that it is the final hour. 19They went out from us, but they didn’t belong to us; for if they had belonged to us, they would have continued with us. But they left, that they might be revealed that none of them belong to us. 20You have an anointing from the Holy One, and you all have knowledge. 21I have not written to you because you don’t know the truth, but because you know it, and because no lie is of the truth. 22Who is the liar but he who denies that Jesus is the Christ? This is the Antichrist, he who denies the Father and the Son. 23Whoever denies the Son doesn’t have the Father. He who confesses the Son has the Father also.
24Therefore, as for you, let that remain in you which you heard from the beginning. If that which you heard from the beginning remains in you, you also will remain in the Son, and in the Father. 25This is the promise which he promised us, the eternal life.
26These things I have written to you concerning those who would lead you astray. 27As for you, the anointing which you received from him remains in you, and you don’t need for anyone to teach you. But as his anointing teaches you concerning all things, and is true, and is no lie, and even as it taught you, you will remain in him.
28Now, little children, remain in him, that when he appears, we may have boldness and not be ashamed before him at his coming. 29If you know that he is righteous, you know that everyone who practices righteousness has been born of him.
1:5 John introduces the body of his epistle with the declaration that God is light. Interpreters understand this statement in one of three ways. Often, people imagine it to indicate that God’s essential being is light. Many interpreters see this as a reference to God’s revelatory nature and a statement that God reveals Himself. Others see it as a reference to salvation. Those in the light are “saved” saints, and those in the darkness are unregenerate. This sees John using his light-darkness imagery with the same meaning as the Gospel of John. In the Gospel, light symbolizes life, or eternal life, while darkness symbolizes spiritual death. In his epistle, it is best to see “light” as symbolic of moral purity (holiness). This is made evident by John’s statement in 3:3 within the context of the warning of 2:8. Finally, the discussion of the following verses focuses on issues of holiness and purity as opposed to revelation or salvation. Therefore, the light-darkness motif has spheres of existence in focus rather than states of being. What John is about to teach is that fellowship (communion) with God requires truthfulness concerning sin.
To emphasize the absolute nature of God’s moral purity, His holiness, John uses antithetic parallelism. The two statements affirm the same truth. The first is the positive element, “God is light.” This same truth is then expressed negatively: “In Him there is absolutely no darkness.” John’s point is that the sphere in which God exists is absolutely pure. So, the question becomes, “Who, then, can commune with such a pure God?” The answer comes in the verses to follow.”