And hereby we do know that we know him, if we keep his commandments.

1 JOHN 2:3KJV
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What does 1 John 2:3 mean?

1 John 2:3 says that keeping God’s commandments gives people a way to know that they truly know him. The verse connects knowing him with a response to what he has commanded, rather than treating knowledge as a matter of words alone.

The writer includes himself and his readers by saying “we.” After speaking of Jesus Christ in verse 2, he turns to the question of how “we do know” that we know him.

The Greek behind 1 John 2:3

  • “know” — γινώσκω (ginōskō): This word can mean to know or come to know. In the Greek sentence, the first “know” describes present awareness, while the second points to a knowledge of him that has been established.
  • “keep” — τηρέω (tēreō): This word can carry the sense of observing or paying careful attention to something. Here it describes how people treat “his commandments,” not merely whether they can name them.

Why 1 John 2:3 matters

  • The verse connects its test with a claim someone might make. The next verse speaks of a person who says, “I know him,” but does not keep his commandments.
  • The passage gives love a central place in explaining the commandments. A few verses later, the writer speaks of an old commandment and then addresses the question of loving or hating a brother.

Where else these words appear

“commandments” Greek G1785 · used in 65 verses

  • Matthew 5:19 Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
  • John 12:49 For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak.
  • Titus 1:14 Not giving heed to Jewish fables, and commandments of men, that turn from the truth.

“keep” Greek G5083 · used in 68 verses

  • Matthew 19:17 And he said unto him, Why callest thou me good? there is none good but one, that is, God: but if thou wilt enter into life, keep the commandments.
  • John 17:15 I pray not that thou shouldest take them out of the world, but that thou shouldest keep them from the evil.
  • 2 Peter 2:17 These are wells without water, clouds that are carried with a tempest; to whom the mist of darkness is reserved for ever.

“hereby” 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.