I John 3:12 · Bible study
1 John 3:12 Commentary: Cain, Hatred, and the Origin of Evil
Greek · 11 what the commentators say
Meaning in one sentence
Why did Cain murder Abel? Explore 1 John 3:12's revelation that hatred springs from evil deeds and spiritual origin, with verse analysis and commentary.
Research Summary
- Meaning: John warns believers not to imitate Cain, whose hatred of his brother originated from envy over righteousness and from being under the devil’s influence.
- Key words: “of the evil one” (ἐκ τοῦ πονηροῦ), moral and spiritual origin; “slew” (ἔσφαξεν), sacrificial violence language; “works” (ἔργα), deeds revealing character.
- Main debate: Whether “of the evil one” is a literal descent or moral kinship; all agree it means being under the devil’s sway.
- Theological theme: Hatred reveals spiritual parentage, children of the devil vs. children of God (v.10).
- Best use: A diagnostic passage: do we love or resent the righteous? It points us to Christ, who laid down his life for the brothers (v.16).
Translation Comparison
BSB Berean Standard Bible 2020
Do not be like Cain, who belonged to the evil one and murdered his brother. And why did Cain slay him? Because his own deeds were evil, while those of his brother were righteous.
WEB World English Bible 2000
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.
KJV King James Version 1769
Not as Cain, who was of that wicked one, and slew his brother. And wherefore slew he him? Because his own works were evil, and his brother’s righteous.
ASV American Standard Version 1901
not as Cain was of the evil one, and slew his brother. And wherefore slew he him? Because his works were evil, and his brother’s righteous.
YLT Young's Literal Translation 1898
not as Cain--of the evil one he was, and he did slay his brother, and wherefore did he slay him? because his works were evil, and those of his brother righteous.
Darby Darby Bible 1890
not as Cain was of the wicked one, and slew his brother; and on account of what slew he him? because his works were wicked, and those of his brother righteous.
Douay-Rheims Douay-Rheims Bible 1899
Not 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.
Translations in other languages (10 available)
No como Caín, que era del|strong="G1537, G3588" maligno, y mató á su hermano. ¿ Y por qué causa le mató? Porque sus obras eran malas, y las de su hermano justas.
Não sejamos como Caim, que era do maligno, e matou o seu irmão. E por que o matou? Porque as suas obras eram más, e as do seu irmão justas.
et ne pas ressembler à Caïn, qui était du malin, et qui tua son frère. Et pourquoi le tua-t-il? parce que ses œuvres étaient mauvaises, et que celles de son frère étaient justes.
Nicht wie Kain, der von dem Argen war und erwürgte seinen Bruder. Und warum erwürgte er ihn? Weil seine Werke böse waren, und die seines Bruders gerecht.
Niet gelijk Kain, die uit den boze was, en zijn broeder doodsloeg; en om wat oorzaak sloeg hij hem dood? Omdat zijn werken boos waren, en van zijn broeder rechtvaardig.
che ci amiamo gli uni gli altri, e non facciamo come Caino, che era dal maligno, e uccise il suo fratello. E perché l’uccise? Perché le sue opere erano malvage, e quelle del suo fratello erano giuste.
Nie jako Kain, który był z tego złośnika i zabił brata swego. A dlaczegoż go zabił? Iż uczynki jego złe były, a brata jego sprawiedliwe.
не так, как Каин, который был от лукавого и убил брата своего. А за что убил его? За то, что дела его были злы, а дела брата его праведны.
不可 像 該隱；他是 屬 那惡者， 殺了 他的 兄弟。 為 甚麼 殺了 他呢？因 自己的 行為 是 惡的， 兄弟的 行為是善的。
Not being of the Evil One like Cain, who put his brother to death. And why did he put him to death? Because his works were evil and his brother's works were good.
Verse in Context
Original Language (Koine Greek)
New Testament · Koine Greek · I John 3:12
Source: STEPBible TAGNT/TEHB (CC-BY 4.0). Click or tap a morphology code to see the full parsing.
Scholars' Consensus
Commentators across traditions agree that John uses Cain as the definitive warning against hatred. Cain is described as being “of the evil one”, a phrase all point (ἐκ τοῦ πονηροῦ), meaning he was under the devil’s influence and acted from his instigation (Barnes, Calvin, Clarke). The murder was not provoked by Abel’s wrongdoing; rather, it was precisely Abel’s righteousness that enraged Cain (Wesley, Henry). John’s question “Why did he kill him?” answers itself: “Because his own works were evil, and his brother’s righteous.” Cain’s evil deeds contrasted with Abel’s acceptance before God (Gn 4:4), and envy over God’s favor drove him to fratricide (JFB, Gill). The unanimous point is that hatred has a spiritual root, it flows from being “of the evil one,” not from any fault in the one hated. Love, by contrast, is the mark of being born of God.
How settled is the interpretation?
Interpretive difficulty: Low
What is clear: It is not in dispute that Cain’s murder of Abel stemmed from envy over Abel’s righteous deeds and that John presents this as a warning against hatred, which originates from the evil one.
What Scholars Agree and Debate
| Topic | Agreed | Debated |
|---|---|---|
| Meaning of 'of the evil one' | Christians agree it refers to being under the devil’s influence and morally aligned with him. | Some traditions (e.g., Reformed) emphasize sovereign election; others (e.g., Wesleyan) stress moral choice and influence. Both affirm Cain’s culpability. |
| Why Cain killed Abel | All agree the immediate cause was envy over God’s acceptance of Abel’s offering. | Some emphasize Cain’s anger at God’s rejection of his own offering (Genesis 4); others focus on his hatred of Abel’s righteousness itself. |
| Relevance to Christian community | All see this as a warning against brotherly hatred and a call to love. | Catholic and Orthodox traditions highlight the liturgy of sacrifice and the martyrological aspect; Protestant traditions focus on faith and works, and the inner root of sin. |
Historical & Cultural Context
John draws directly from Genesis 4:1-16, the first murder in Scripture. Cain, the firstborn, brought an offering “of the fruit of the ground” while Abel brought “the firstborn of his flock.” God respected Abel’s offering but not Cain’s. Jewish tradition (cited by Gill and the Cambridge Bible) speculated about Cain’s origin, but John avoids such fanciful readings, he treats Cain as morally “of the evil one,” not literally the devil’s son. The Greek verb John uses for “slew” is ἔσφαξεν (sphazō), which originally meant “to cut the throat,” especially of a sacrificial victim (Vincent). Outside John’s writings, sphazō appears only in Revelation (e.g., Rev 5:6, 6:9), where it describes the Lamb “slain” and the martyrs “slain” for the Word. This lexical link suggests John sees Abel’s death as a martyrdom, the righteous one killed by the wicked. The question “Why?” (χάριν τίνος, “on account of what?”) is rare in the New Testament (Vincent compares Eph 3:1, 14). John uses it to stress that Cain’s motive was wholly internal: not Abel’s actions but Cain’s own evil character. The first century church faced similar hostility from a world that rejected their righteousness. John’s readers were tempted to hate back, but he shows that hatred is the mark of the devil’s children.
Textual Notes
The supplied sources note no significant textual variants for 1 John 3:12. The Greek text is stable across manuscripts. The phrase χάριν τίνος (“on account of what?”) is grammatically unusual (preposition after its object), but well-attested. The verb ἔσφαξεν appears only here in the epistles, and its presence aligns with Johannine style (Vincent).
Reception History
Early church writers such as Irenaeus and Augustine saw Cain as a type of the carnal person and the Jews who rejected Christ. Medieval exegetes read the passage as a moral lesson on envy, often linking it to the seven deadly sins. During the Reformation, Luther and Calvin emphasized that Cain represents all whose religion is external and who persecute true faith out of envy. In modern times, the verse is used to expose the spiritual roots of violence, from personal grudges to systemic hatred. It has been sung in hymns about the primal murder and upheld as a call to brotherly love across traditions.
Preaching This Verse
Three-point outline
- Hatred has a spiritual pedigree: John says Cain “was of the evil one.” Hatred is not just a bad habit, it originates in the devil (v.8, v.10). To hate a brother is to walk in the family line of the enemy of God.
- The root of hatred is envy of righteousness: Cain’s murder was not triggered by Abel’s failure but by his faithfulness. “Because his own works were evil, and his brother’s righteous.” When others live rightly, evil hearts are exposed and resentful.
- Hatred leads to murder, and deeper death: John later writes that “whoever hates his brother is a murderer” (v.15). Cain’s act was the logical end of a heart set against God. Hatred kills relationship with God and with others.
Five-point outline
- The pattern: “Not as Cain”, we are not to imitate his example.
- The source: “of the evil one”, belonging to the devil’s company.
- The act: “Slew his brother”, the ultimate fruit of hatred.
- The motive: Envy over righteousness, his works were evil, Abel’s were righteous.
- The warning: If we hate, we show we are not born of God (vv.10, 14-15).
Illustration hooks
- A classmate outperforms you and the teacher praises them. You feel a flash of resentment. Can that feeling, unchecked, grow into something deadly? Cain shows where it leads.
- At work, a colleague gets promoted for honestly earned achievement. You find yourself whispering criticism to others. Hatred often starts with envy of another’s goodness.
- A sibling is celebrated for their faith. Instead of rejoicing, you feel irritation. The urge to diminish their testimony is a small seed of the same spirit that moved Cain.
Questions your congregation is asking
- “I don’t hate anyone, does this passage apply to me?” (John equates hatred with murder in v.15; even small resentment can be a root.)
- “What if someone truly wronged me, is it wrong to be angry?” (John’s point is about settled hostility, not righteous anger against sin. Cain’s anger was unprovoked by evil.)
- “How do I know if I’m ‘of the evil one’?” (John’s test is love: v.14 says we know we have passed from death to life because we love the brothers.)
Leading a Discussion
John holds up Cain as a mirror. Before we judge him, we need to see if any of that same envy or resentment lives in us. Love is not optional, it is the family marker of God’s children.
Discussion questions
- Read verse 12 slowly. What does John’s question (“Why did he kill him?”) teach us about the real cause of Cain’s murder?
- John says Cain “was of the evil one.” What do you think that means for how we understand sin’s origin? (Compare with v.8.)
- Why is it significant that Abel’s murder was not due to any fault of his own but because of his righteousness? How does this challenge our cultural assumptions about conflict?
- In what ways can envy of someone else’s spiritual growth or success become a temptation for Christians today?
- Verse 13 adds: “Don’t be surprised if the world hates you.” How does Cain’s story help explain why the world often opposes believers?
- John later says “whoever hates his brother is a murderer” (v.15). In what sense is hatred a form of murder, even if no physical blow is struck?
- What practical steps can this group take to guard against allowing envy or resentment to grow in our hearts?
Word Study
The key original-language words in this verse. Select any word for its full lexicon entry — meaning, every occurrence in Scripture, and related words.
Cross-References
Source: Treasury of Scripture Knowledge (TSK, public domain)
| Genesis 4:4 | Abel also brought some of the firstborn of his flock and of its fat. Yahweh respected Abel and his offering, |
| Genesis 4:15 | Yahweh said to him, “Therefore whoever slays Cain, vengeance will be taken on him sevenfold.” Yahweh appointed a sign for Cain, so that anyone finding him would not strike him. |
| Genesis 4:25 | Adam knew his wife again. She gave birth to a son, and named him Seth, saying, “for God has given me another child instead of Abel, for Cain killed him.” |
| I Samuel 18:14 | David behaved himself wisely in all his ways; and Yahweh was with him. |
| I Samuel 18:15 | When Saul saw that he behaved himself very wisely, he stood in awe of him. |
| I Samuel 19:4 | Jonathan spoke good of David to Saul his father, and said to him, “Don’t let the king sin against his servant, against David; because he has not sinned against you, and because his works have been very good toward you; |
| I Samuel 19:5 | for he put his life in his hand and struck the Philistine, and Yahweh worked a great victory for all Israel. You saw it and rejoiced. Why then will you sin against innocent blood, to kill David without a cause?” |
| I Samuel 22:14 | Then Ahimelech answered the king, and said, “Who among all your servants is so faithful as David, who is the king’s son-in-law, captain of your body guard, and honored in your house? |
Interlinear and lexical data from STEPBible (CC BY 4.0). Cross-reference data from OpenBible.info (CC BY 4.0). Commentaries are public domain.
For personal reflection
Read the devotional page — prayer, application, and "for families"
What the Commentators Say
11 public-domain commentaries, condensed into plain language.
Adam Clarke's Commentary Methodist/Wesleyan 1826
Clarke directly applies Cain's murder of Abel to justify war and political violence. For him, anyone who instigates or supports such bloodshed is also from the devil, no matter how noble the cause. He insists that Christ's command to love enemies cannot be twisted into an excuse for killing them.
Barnes' Notes on the Bible Protestant 1832
Barnes highlights Cain as a warning example of envy and lovelessness toward a favored brother. He argues that Cain's murder of Abel arose from resentment that his own evil works were rejected while his brother's righteousness was accepted. Most crimes, Barnes observes, stem from this same lack of brotherly love.
Calvin's Commentaries Reformed 1564
Calvin uses Cain as the definitive example of the reprobate, showing that hatred is the ruling characteristic of those under the devil's power. He insists that true holiness before God consists not in invented religious works but in brotherly love, and that wherever hatred, envy and dissimulation reign, the devil holds sway.
Cambridge Bible for Schools and Colleges Anglican 1880
This commentary highlights that the Greek text says "Not as Cain was of the evil one" without the word "who," correcting a common translation. The Greek word for "slay" means "cut the throat," especially of a sacrificial victim, linking this verse to Revelation. Cain's motive was jealousy over Abel's righteous offering, revealing his devilish nature.
Geneva Bible Notes Reformed 1599
The Geneva Bible notes trace Cain's murder of Abel back to his spiritual origin: he was of the wicked one, not of God. The motive was not mere jealousy but the fundamental hostility of evil toward good — Cain killed because his own deeds were evil and his brother's were righteous.
Gill's Exposition of the Bible Baptist 1748
Gill focuses on the contrast between Cain's outwardly good sacrifice and his evil motive, offered without faith. Cain murdered Abel because his own works were evil while Abel's were righteous. This illustrates the ongoing conflict between those who trust in their own works and those who receive grace through faith.
Jamieson-Fausset-Brown Commentary Protestant 1871
JFB stresses that the phrase should read "evil one" rather than "wicked one," to match the statement that Cain's own works were evil. Cain murdered his brother out of envy and hatred, provoked by the contrast between his evil deeds and Abel's righteous ones. This hostility goes back to the original enmity between the serpent's seed and the woman's seed.
Lange's Commentary Reformed 1857
Lange insists brotherly love is not just a part of righteousness but its very substance, the sum of all right-doing. As Cain's hatred sprang from his evil works, so the world inevitably
Matthew Henry's Commentary Reformed/Presbyterian 1710
Henry draws attention to the specific motive behind Cain's murder: religious envy. Cain killed his brother not from mere anger but because Abel's righteous service exposed his own evil works and lost God's favor, making him the first clear example of the devil's offspring persecuting the righteous for their devotion.
Vincent's Word Studies Evangelical 1887
Vincent points out that the Greek construction is irregular, lacking the word "who" and reading literally as "not as Cain of the evil one." He notes the verb "slew" is rare in John's writings, originally meaning to cut the throat, as with sacrificial animals, before its general sense of killing.
Wesley's Explanatory Notes Methodist/Wesleyan 1754
Wesley stresses that Cain murdered Abel not because of any wrong Abel had done, but for the opposite reason: precisely because Abel was righteous. Cain's act proved he belonged to the evil one, rejecting goodness itself.