“That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.”
My Notes
What Does John 3:6 Mean?
Jesus explains the new birth to Nicodemus with a binary statement: flesh produces flesh. Spirit produces spirit. The two categories don't mix. What's born of human nature stays human. What's born of God's Spirit is spiritual. You can't upgrade flesh into spirit. You need a new birth entirely.
The repetition of "is" (estin) in both clauses is emphatic: flesh IS flesh. Spirit IS spirit. Not "flesh tends to be flesh" or "spirit usually produces spirit." They are what they are. Categorically. The biological birth produces a biological being. The spiritual birth produces a spiritual one. Different births. Different natures.
This is Jesus' answer to Nicodemus's confusion about being "born again" (verse 3). Nicodemus thought in physical categories: how can a man enter his mother's womb? Jesus says: you're thinking in the wrong category entirely. This isn't about flesh. It's about Spirit. A completely different kind of birth.
Reflection Questions
- 1.Where are you trying to make your flesh spiritual — upgrading human effort into spiritual life?
- 2.How does the categorical distinction (flesh IS flesh, spirit IS spirit) challenge self-improvement as a path to God?
- 3.Does the new birth feel like good news or threatening news — and what does your answer reveal?
- 4.What would it look like to stop refining the flesh and start receiving the Spirit?
Devotional
Flesh is flesh. Spirit is spirit. Two categories. No crossover.
Nicodemus is a Pharisee — the best flesh available. Educated, devout, morally disciplined, religiously accomplished. If anyone's flesh could produce spiritual life, it would be his. And Jesus looks at the finest religious flesh in Israel and says: it's still flesh. You need something else entirely.
This demolishes every self-improvement approach to God. You can't refine flesh into spirit. You can't educate yourself into the kingdom. You can't discipline your way into new life. The flesh, at its absolute best — Nicodemus-grade flesh — is still flesh. And flesh doesn't produce what only Spirit can.
That's why Jesus says "born again" — not "improved again" or "educated again" or "reformed again." Born. A completely new origin. A completely different source. What the Spirit produces is spirit — new life from a new source that has nothing to do with your existing nature.
This is either the most discouraging or the most liberating thing you've ever heard. Discouraging if you've been trying to make your flesh spiritual. Liberating if you've been exhausted by the effort and are ready to admit: I need something I can't produce.
Flesh is flesh. Your best effort is still your effort. But Spirit is spirit. And Spirit is available. Not as an upgrade to what you are. As a replacement for how you were born.
You need a new birth. Not a better version of the old one.
Commentary
Trusted original commentary from respected historical Bible scholars and theologians.
Marvel not that I said unto thee,...., For Nicodemus was quite astonished, at this doctrine of the new birth; it was…
That which is born of the flesh - To show the necessity of this change, the Saviour directs the attention of Nicodemus…
That which is born of the flesh is flesh - This is the answer to the objection made by Nicodemus in Joh 3:4. Can a man…
We found, in the close of the foregoing chapter, that few were brought to Christ at Jerusalem; yet here was one, a…
The meaning of -birth from above" is still further explained by an analogy. What a man inherits from his parents is a…
Cross References
Related passages throughout Scripture