1 John 3

See how great a love the Father has given to us, that we should be called children of God! For this cause the world doesn’t know us, because it didn’t know him.

Beloved, now we are children of God. It is not yet revealed what we will be; but we know that when he is revealed, we will be like him, for we will see him just as he is.

Everyone who has this hope set on him purifies himself, even as he is pure.

Everyone who sins also commits lawlessness. Sin is lawlessness.

You know that he was revealed to take away our sins, and no sin is in him.

Whoever remains in him doesn’t sin. Whoever sins hasn’t seen him and doesn’t know him.

Little children, let no one lead you astray. He who does righteousness is righteous, even as he is righteous.

He who sins is of the devil, for the devil has been sinning from the beginning. To this end the Son of God was revealed: that he might destroy the works of the devil.

Whoever is born of God doesn’t commit sin, because his seed remains in him, and he can’t sin, because he is born of God.

In this the children of God are revealed, and the children of the devil. Whoever doesn’t do righteousness is not of God, neither is he who doesn’t love his brother.

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

unlike Cain, who was of the evil one and killed his brother. Why did he kill him? Because his deeds were evil, and his brother’s righteous.

Don’t be surprised, my brothers, if the world hates you.

We know that we have passed out of death into life, because we love the brothers. He who doesn’t love his brother remains in death.

Whoever hates his brother is a murderer, and you know that no murderer has eternal life remaining in him.

By this we know love, because he laid down his life for us. And we ought to lay down our lives for the brothers.

But whoever has the world’s goods and sees his brother in need, then closes his heart of compassion against him, how does God’s love remain in him?

My little children, let’s not love in word only, or with the tongue only, but in deed and truth.

And by this we know that we are of the truth and persuade our hearts before him,

because if our heart condemns us, God is greater than our heart, and knows all things.

Beloved, if our hearts don’t condemn us, we have boldness toward God;

so whatever we ask, we receive from him, because we keep his commandments and do the things that are pleasing in his sight.

This is his commandment, that we should believe in the name of his Son, Jesus Christ, and love one another, even as he commanded.

He who keeps his commandments remains in him, and he in him. By this we know that he remains in us, by the Spirit which he gave us.

Chapter overviewAI-generated

Overview.
This chapter unfolds the ethical implications of being children of God, contrasting the spiritual lineage of God and the devil through moral conduct and love. It emphasizes the believer’s future transformation into Christ’s likeness, the necessity of purity in light of that hope, and the inseparability of love from genuine faith. John grounds identity in divine sonship, then shows how that identity is revealed in righteous living and brotherly love, especially amid hatred from the world.

Flow.

Begins with a reflection on the Father’s love in making believers His children, explaining the world’s rejection due to ignorance of God (vv. 1–3).
Moves to the nature of sin as lawlessness and Christ’s sinless work to remove it, linking abiding in Christ with the absence of sin (vv. 4–6).
Distinguishes between those born of God and those of the devil based on their moral practice and love, using Cain as a warning example (vv. 7–13).
Centers love as a mark of eternal life, teaching that love must be demonstrated in truth and action, not merely in speech (vv. 14–18).
Concludes with the connection between obedience, confidence before God, and the internal witness of the Spirit, confirming believers in their standing (vv. 19–24).

Connections.
Following chapter 2, which ends with the command to love not the world and the anticipation of Christ’s return, this chapter deepens the contrast between light and darkness by focusing on moral transformation and the evidence of divine birth. It builds on the assurance themes of chapter 2 by showing how love and righteousness testify to being God’s children. The emphasis on the Spirit’s witness in vv. 24 directly prepares for chapter 4, which will test spirits and reassert the connection between confession, love, and divine origin.

What it teaches.
True believers are by grace made children of God (WCF 12.1), with their future likeness to Christ secured by sight of Him (WCF 13.2), which motivates present purity (HC LD 32). Sin is defined as transgression of God’s law (WCF 19.1), and persistent sin reveals a lack of true union with Christ (WCF 11.4). The regenerate cannot habitually sin because God’s nature abides in them (WCF 13.2), and this new life manifests in love, which is the fulfillment of the law (Rom. 13:10; HC LD 45). Assurance rests not on self-assertion but on the conscience informed by obedience and God’s testimony (; WCF 18.2), sealed by the Spirit (WCF 18.4).

Apply.
Genuine faith shows itself in tangible care for fellow believers, especially when it costs something to give.

AI-generated. Not a substitute for Scripture, your pastor, or the confessions.