“I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.”
My Notes
What Does 1 John 2:21 Mean?
"I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth." John clarifies his REASON for writing: NOT because they're IGNORANT but because they already KNOW the truth. The letter isn't TEACHING the unknown. It's CONFIRMING the known. The recipients don't need NEW information. They need REINFORCEMENT of existing knowledge. And the reinforcement includes this principle: no lie originates from the truth. Lies and truth are incompatible categories.
The phrase "not because ye know not the truth, but because ye know it" (ouk egrapsa hymin hoti ouk oidate tēn alētheian, all' hoti oidate autēn — I did not write to you because you do not know the truth, but because you know it) HONORS the recipients: John doesn't write as a TEACHER to the ignorant. He writes as a PASTOR to the informed. The recipients ALREADY KNOW the truth. The letter REMINDS, CONFIRMS, and REINFORCES — it doesn't INTRODUCE. The writing respects what the readers already possess.
The "no lie is of the truth" (pan pseudos ek tēs alētheias ouk estin — every lie is not from/of the truth) states a principle of CATEGORICAL INCOMPATIBILITY: lies don't come FROM truth. No lie originates in truth. No falsehood is PRODUCED by truth. The two categories are SEPARATE at the source. If it's a lie, it didn't come from truth. If it came from truth, it's not a lie. The separation is total.
Reflection Questions
- 1.What truth do you already know that needs confirming rather than introducing?
- 2.What does John writing because they KNOW (not because they don't) teach about pastoral respect?
- 3.How does 'no lie is of the truth' function as a lie-detector for every teaching you encounter?
- 4.What categorical separation between lies and truth would you apply to the voices in your life?
Devotional
I didn't write because you DON'T know the truth. I wrote because you DO know it. And because no lie comes from the truth. John honors what the readers already possess: the truth is KNOWN. The letter CONFIRMS rather than introduces. The writing reinforces rather than teaches from scratch. And the principle it reinforces is absolute: lies and truth are incompatible at the source.
The 'because ye know it' HONORS the recipients: John doesn't patronize. He doesn't treat the readers as if they're starting from zero. The truth is already IN them (verse 20 — 'ye have an unction from the Holy One, and ye know all things'). The letter doesn't deliver unknown content. It ANCHORS known content. The writing serves the REMINDING, not the introducing.
The 'no lie is of the truth' is the CATEGORICAL SEPARATION: the two categories — truth and lies — are INCOMPATIBLE at the SOURCE level. A lie doesn't grow from truth-soil. A falsehood doesn't emerge from truth-roots. If it's a lie, its origin is NOT truth. The separation is at the DNA level. The incompatibility is total and permanent.
The PRACTICAL application addresses the false teachers (verse 22-23): the antichrists who deny that Jesus is the Christ are LIARS. And since no lie comes from truth, their teaching doesn't come from truth either. The categorical principle separates the false teachers from the truth-community. The lie identifies the source. The incompatibility exposes the origin.
What truth do you already KNOW — that needs confirming rather than introducing?
Commentary
Trusted original commentary from respected historical Bible scholars and theologians.
I have not written unto you,.... Either this epistle, or rather what particularly here regards those apostates from the…
I have not written unto you because ye know not the truth - You are not to regard my writing to you in this earnest…
I have not written, etc. - It is not because ye are ignorant of these things that I write to you, but because you know…
Here, I. The apostle encourages the disciples (to whom he writes) in these dangerous times, in this hour of seducers; he…
I have not written Literally, as in 1Jn 2:13-14; 1Jn 2:2, I wrote not, or, did not write: it is the aorist in the Greek.…
Cross References
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