He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
This verse comes from a letter written by the apostle John — one of Jesus' closest disciples — to early Christians around the end of the first century. John is confronting a dangerous idea spreading through some churches: that a person could claim a spiritual relationship with God while ignoring how they actually lived. The word 'liar' here is blunt and deliberate — John is not softening his point. In biblical thought, knowing God isn't mere intellectual familiarity; it's a relational, transformative bond. A claim to know someone you've never genuinely engaged with isn't knowledge — it's a story you're telling yourself.
Lord, it's uncomfortable to sit with this verse. Show me honestly where my words about knowing You don't match how I actually live. I don't want a faith that's just a story I tell — I want the real thing. Change me from the inside out. Amen.
There's a gap that most of us are very good at not looking at. It lives between the version of ourselves we describe — the person who values honesty, who loves their neighbor, who follows Jesus — and the version who actually showed up last Tuesday. John doesn't let that gap stay comfortable. He calls it what it is: a lie. Not a mistake, not a shortcoming, not a 'work in progress' moment — a lie. That's a hard word. But it's also a clarifying one. The invitation here isn't guilt — it's alignment. John isn't saying you need to be perfect before you can claim a relationship with God. He's saying that real relationship changes how you live, and if it hasn't, it's worth asking what kind of relationship you actually have. Where is the gap between what you say you believe and how you actually treat people, spend your money, or spend your Tuesday mornings? That gap is the most honest prayer you can bring to God today.
What does John mean by 'know him' — and what's the difference between knowing about God and actually knowing God in a way that changes you?
Where do you notice the biggest gap between what you say you believe and how you actually live from day to day?
Is there a difference between someone who disobeys God occasionally and still grieves it, versus someone whose consistent pattern is disobedience with no concern? How do you think about that distinction?
How does this verse shape how you respond when you see a clear disconnect between someone's stated faith and how they treat the people around them?
What is one specific area of your life where you want to close the gap between belief and behavior this week — and what would that actually require?
If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:
1 John 1:6
If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
1 John 4:20
What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?
James 2:14
If we say that we have no sin, we deceive ourselves, and the truth is not in us.
1 John 1:8
And one of you say unto them, Depart in peace, be ye warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?
James 2:16
They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.
Titus 1:16
Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway , even unto the end of the world. Amen.
Matthew 28:20
He that saith he abideth in him ought himself also so to walk, even as he walked.
1 John 2:6
Whoever says, "I have come to know Him," but does not habitually keep [focused on His precepts and obey] His commandments (teachings), is a liar, and the truth [of the divine word] is not in him.
AMP
Whoever says “I know him” but does not keep his commandments is a liar, and the truth is not in him,
ESV
The one who says, 'I have come to know Him,' and does not keep His commandments, is a liar, and the truth is not in him;
NASB
The man who says, “I know him,” but does not do what he commands is a liar, and the truth is not in him.
NIV
He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him.
NKJV
If someone claims, “I know God,” but doesn’t obey God’s commandments, that person is a liar and is not living in the truth.
NLT
If someone claims, "I know him well!" but doesn't keep his commandments, he's obviously a liar. His life doesn't match his words.
MSG