1 John – Chapter 3

New Testament24 Verses

Chapter Summary

1 John 3 opens with the words: "Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God. Therefore the world…" Cain stands at the center of this chapter. Across its 24 verses, two threads run through the text: family and covenant relationships and love and charity. Read slowly, this chapter rewards the kind of prayerful attention the Church calls lectio divina.

1Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God. Therefore the world knoweth not us, because it knew not him.

2Dearly beloved, we are now the sons of God: and it hath not yet appeared what we shall be. We know that when he shall appear we shall be like to him: because we shall see him as he is.

3And every one that hath this hope in him sanctifieth himself, as he also is holy.

4Whosoever committeth sin committeth also iniquity. And sin is iniquity.

5And you know that he appeared to take away our sins: and in him there is no sin.

6Whosoever abideth in him sinneth not: and whosoever sinneth hath not seen him nor known him.

7Little children, let no man deceive you. He that doth justice is just, even as he is just.

8He that committeth sin is of the devil: for the devil sinneth from the beginning. For this purpose the Son of God appeared, that he might destroy the works of the devil.

9Whosoever is born of God committeth not sin: for his seed abideth in him. And he cannot sin, because he is born of God.

10In this the children of God are manifest, and the children of the devil. Whosoever is not just is not of God, or he that loveth not his brother.

11For this is the declaration which you have heard from the beginning, that you should love one another.

12Not as Cain, who was of the wicked one and killed his brother. And wherefore did he kill him? Because his own works were wicked: and his brother's just.

13Wonder not, brethren, if the world hate you.

14We know that we have passed from death to life, because we love the brethren. He that loveth not abideth in death.

15Whosoever hateth his brother is a murderer. And you know that no murderer hath eternal life abiding in himself.

16In this we have known the charity of God, because he hath laid down his life for us: and we ought to lay down our lives for the brethren.

17He that hath the substance of this world and shall see his brother in need and shall shut up his bowels from him: how doth the charity of God abide in him?

18My little children, let us not love in word nor in tongue, but in deed and in truth.

19In this we know that we are of the truth and in his sight shall persuade our hearts.

20For if our heart reprehend us, God is greater than our heart and knoweth all things.

21Dearly beloved, if our heart do not reprehend us, we have confidence towards God.

22And whatsoever we shall ask, we shall receive of him: because we keep his commandments and do those things which are pleasing in his sight.

23And this is his commandment: That we should believe in the name of his Son Jesus Christ and love one another, as he hath given commandment unto us.

24And he that keepeth his commandments abideth in him, and he in him. And in this we know that he abideth in us by the Spirit which he hath given us.

Important Verses in 1 John 3

Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God. Therefore the world knoweth not us, because it knew not him.

1 John 3:1

In this the children of God are manifest, and the children of the devil. Whosoever is not just is not of God, or he that loveth not his brother.

1 John 3:10

We know that we have passed from death to life, because we love the brethren. He that loveth not abideth in death.

1 John 3:14

Dearly beloved, if our heart do not reprehend us, we have confidence towards God.

1 John 3:21

Historical Context

1 John addresses the churches of Asia, anchored in the truth of the Incarnation and in love within the broader story of God's covenant people. Chapter 3 of 5 stands in the central portion of the book, where decisive events or teachings take shape. It is a apostolic teaching addressed to a Christian community with 24 verses in the Douay-Rheims translation. Cain appear at the center of the events recorded here. The passage starts with these words: "Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God.…" The chapter ends with: "And he that keepeth his commandments abideth in him, and he in him. And in this we know that he abideth in us by the…" Read against its original backdrop, Written against early heretics who denied that Christ truly came in the flesh, this letter gives the Church its tests of authentic faith: right belief in the incarnate Son, obedience to the commandments, and love of the… Scholarly and ecclesial tradition places the composition of 1 John around About AD 90-100, at Ephesus.

Who Wrote It

The Apostle John, author of the fourth Gospel

When It Was Written

About AD 90-100, at Ephesus

Catholic Commentary

The letter combines theological exposition with pastoral exhortation for believers. A pivotal line is verse 1: "Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God. Therefore the world knoweth not us,…" The passage repeatedly touches on family and covenant relationships.

Catholic exegesis reads 1 John 3 within the unity of Scripture and Tradition. John's teaching on love grounds Catholic spirituality (CIC 1828). St. Athanasius and other Fathers of the Church saw in texts like this a preparation for or reflection of Christ, the center of revelation (CIC 26).

For Christians today, the chapter's lesson is clear: The family is the first school of faith, where love, obedience, and forgiveness are learned.. The Church invites us to receive this word not as antiquarian information but as living Scripture proclaimed at Mass and prayed in lectio divina.

Main Teachings

  • The family is the first school of faith, where love, obedience, and forgiveness are learned.
  • Love of God and love of neighbor sum up the whole law and reveal the very nature of God.
  • Sin has real consequences, but God's judgment always aims at conversion and restoration.

People in This Chapter

Cain1 mention

Reflection for Today

Sacred Scripture presents 1 John Chapter 3 as a unique stage in salvation history, not merely as background to other books.

St. Irenaeus and other Fathers of the Church meditated on texts like this one, seeing in them instruction for the spiritual life. John's teaching on love grounds Catholic spirituality (CIC 1828). The passage calls believers to grasp that God is love, and whoever abides in love abides in God.

May your reading of 1 John Chapter 3 become true lectio divina: read the words, meditate on their meaning, respond in prayer, and rest in God's presence. Ask the Holy Spirit to show how God is love, and whoever abides in love abides in God applies to your life today.

💡Catholic Reflection • Church Teachings

Frequently Asked Questions

What is 1 John Chapter 3 about?

1 John 3 contains 24 verses. It opens with "Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God.…" and closes with "And he that keepeth his commandments abideth in him, and he in him. And in this we know that he abideth in us by the…". The book as a whole is epistle.

What is a key verse in 1 John 3?

One of the most significant verses is verse 1: "Behold what manner of charity the Father hath bestowed upon us, that we should be called and should be the sons of God. Therefore the world knoweth not us, because it knew not him." It is often cited in Catholic teaching and preaching.

Who appears in 1 John Chapter 3?

This chapter mentions Cain.

Who wrote 1 John and when?

The Apostle John, author of the fourth Gospel. About AD 90-100, at Ephesus.

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