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.

1 JOHN 3:12KJV
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What does 1 John 3:12 mean?

1 John 3:12 warns believers not to act like Cain, who belonged to "that wicked one" and killed his brother Abel because Cain’s own actions were evil while Abel’s were righteous. The verse explains that Cain’s jealousy and wrongdoing led him to murder his brother, highlighting the contrast between good and evil behavior.

The apostle John is writing to early Christian communities, encouraging them to love one another and avoid hatred. By using Cain as an example, John points out how hatred and wrongdoing can lead to destructive actions, and he sets up Abel’s righteousness as a model for believers. This verse is part of a larger section about living as children of God and showing love through actions.

The Greek behind 1 John 3:12

  • "of that wicked one" (τοῦ πονηροῦ, transliteration: tou ponērou): The Greek word πονηρός (ponēros) often means "evil" or "wicked," and here it refers to the devil. John is emphasizing that Cain’s actions were influenced by evil, not just personal anger.
  • "slew" (ἔσφαξεν, transliteration: esphaxen): This Greek word means "to slaughter" or "to kill violently." The choice of word highlights the brutality of Cain’s act, not just a simple killing.
  • "works" (ἔργα, transliteration: erga): This word means "deeds" or "actions." John contrasts Cain’s evil deeds with Abel’s righteous ones, making it clear that actions reveal a person’s true character.

Why 1 John 3:12 matters

  • 1 John 3:12 clarifies that the root of Cain’s violence was not just personal conflict, but a deeper moral divide between evil and righteousness.
  • The verse emphasizes that hatred and wrongdoing are incompatible with the life God calls believers to live, connecting the story of Cain and Abel to the Christian call to love.
  • By referencing a well-known Old Testament story, John helps readers see the seriousness of harboring jealousy or hatred, warning that such attitudes can have devastating consequences.

Where else these words appear

“Cain” Greek G2535 · used in 3 verses

  • Hebrews 11:4 By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts: and by it he being dead yet speaketh.
  • Jude 1:11 Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core.

“slew” Greek G4969 · used in 9 verses

  • Revelation 5:6 And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth.
  • Revelation 5:12 Saying with a loud voice, Worthy is the Lamb that was slain to receive power, and riches, and wisdom, and strength, and honour, and glory, and blessing.
  • Revelation 13:3 And I saw one of his heads as it were wounded to death; and his deadly wound was healed: and all the world wondered after the beast.

“wherefore” Greek G5484 · used in 9 verses

  • Luke 7:47 Wherefore I say unto thee, Her sins, which are many, are forgiven; for she loved much: but to whom little is forgiven, the same loveth little.
  • Ephesians 3:1 For this cause I Paul, the prisoner of Jesus Christ for you Gentiles,
  • Titus 1:5 For this cause left I thee in Crete, that thou shouldest set in order the things that are wanting, and ordain elders in every city, as I had appointed thee:

“one” Greek G4190 · used in 71 verses

  • Matthew 5:11 Blessed are ye, when men shall revile you, and persecute you, and shall say all manner of evil against you falsely, for my sake.
  • Mark 7:22 Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness:
  • Romans 12:9 Let love be without dissimulation. Abhor that which is evil; cleave to that which is good.