In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.

1 JOHN 3:10KJV
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1 John 3:10 (KJV)

What does 1 John 3:10 mean?

1 John 3:10 says that it is clear who belongs to God and who belongs to the devil: anyone who does not do what is right, or does not love their brother, does not come from God. The verse draws a sharp line between those who live according to God’s ways and those who do not.

John, writing to early Christians, is warning his readers that true children of God are recognized by their actions—specifically, by doing what is right and by loving others in the community. This verse sums up his teaching that faith is shown in both moral living and genuine love for fellow believers, making it a test for authentic Christian identity.

The Greek behind 1 John 3:10

  • The word for "children" is τέκνα (tekna), which means "offspring" or "children." John uses this word to highlight a close family relationship, not just a distant connection.
  • The word for "manifest" is φανερά (phanera), meaning "obvious" or "plain to see." John is saying that a person’s true spiritual family is made visible by their actions.
  • The word for "doeth" is ποιῶν (poiōn), which means "to practice" or "to do regularly." This stresses that righteousness is not a one-time act but a way of life.
  • The word for "loveth" is ἀγαπῶν (agapōn), from the verb for selfless, committed love. John is not talking about feelings but about a deep, active care for others.

Why 1 John 3:10 matters

  • This verse clears up the idea that spiritual identity is just about belief or words; John insists that real belonging to God is shown in consistent actions and love.
  • It emphasizes that loving others is not optional for Christians but is a defining mark of being God’s child.
  • 1 John 3:10 connects to the larger theme in the letter about living out faith in practical ways, showing that moral choices and relationships are central to genuine Christianity.

Where else these words appear

“manifest” Greek G5318 · used in 19 verses

  • Matthew 6:4 That thine alms may be in secret: and thy Father which seeth in secret himself shall reward thee openly.
  • Mark 6:14 And king Herod heard of him;(for his name was spread abroad:) and he said, That John the Baptist was risen from the dead, and therefore mighty works do shew forth themselves in him.
  • 1 Corinthians 3:13 Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is.

“devil” Greek G1228 · used in 36 verses

  • Matthew 4:1 Then was Jesus led up of the Spirit into the wilderness to be tempted of the devil.
  • Luke 8:12 Those by the way side are they that hear; then cometh the devil, and taketh away the word out of their hearts, lest they should believe and be saved.
  • 2 Timothy 3:3 Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good,

“righteousness” Greek G1343 · used in 85 verses

  • Matthew 3:15 And Jesus answering said unto him, Suffer it to be so now: for thus it becometh us to fulfil all righteousness. Then he suffered him.
  • Romans 6:13 Neither yield ye your members as instruments of unrighteousness unto sin: but yield yourselves unto God, as those that are alive from the dead, and your members as instruments of righteousness unto God.
  • Ephesians 5:9 (For the fruit of the Spirit is in all goodness and righteousness and truth;)

“this” Greek G5129 · used in 87 verses

  • Matthew 8:9 For I am a man under authority, having soldiers under me: and I say to this man, Go, and he goeth; and to another, Come, and he cometh; and to my servant, Do this, and he doeth it.
  • John 10:3 To him the porter openeth; and the sheep hear his voice: and he calleth his own sheep by name, and leadeth them out.
  • 1 Corinthians 7:24 Brethren, let every man, wherein he is called, therein abide with God.