What does it mean to crucify the flesh?

Crucifixion is not a gentle image. It is slow, public, and fatal, and Paul reaches for that exact word to describe what happens to the believer's sinful nature: "Those who belong to Christ Jesus have crucified the flesh with its passions and desires" (Galatians 5:24). He is not describing a minor adjustment or a New Year's resolution. He is describing an execution.

That intensity matches the seriousness of sin itself. Jesus used equally shocking language when he said if your eye or hand causes you to stumble, cut it off and throw it away, better to enter life maimed than to be thrown into hell whole (Matthew 5:29-30). He was not commanding literal self-mutilation but was insisting that half-measures against sin are no measures at all.

In Paul's letters, "the flesh" refers not simply to the physical body but to the corrupted human nature inherited from Adam, the part of us still pulling toward sin even after conversion. He lists its works plainly: sexual immorality, hatred, jealousy, fits of rage, envy, and more, warning that those who live like this will not inherit the kingdom of God (Galatians 5:19-21).

This is an important clarification, because it protects the phrase from being misread as hatred of the physical body itself. Scripture affirms the body as a genuinely good creation, destined for bodily resurrection, sown perishable and raised imperishable (1 Corinthians 15:42-44). Crucifying the flesh targets the corrupted desires and habits of the old nature, never the body God made and will one day raise glorified.

Against this, he sets the fruit of the Spirit, love, joy, peace, patience, and the rest (Galatians 5:22-23), and he says plainly that those who belong to Christ have crucified the flesh with its passions and desires. This is stated as an accomplished fact for every believer, and also as a summons to live it out.

Romans 6 explains why crucifixion, and not mere reformation, is the right word. "For we know that our old self was crucified with him so that the body ruled by sin might be done away with, that we should no longer be slaves to sin" (Romans 6:6). This happened definitively at the cross and is applied to every believer at conversion; it is not something you achieve through willpower over years of effort.

But Paul immediately moves from that finished reality to a daily command: "count yourselves dead to sin but alive to God in Christ Jesus" (Romans 6:11), and "do not let sin reign in your mortal body" (Romans 6:12). Crucifying the flesh, then, is both a settled fact of your identity in Christ and a battle you fight every day, reckoning what is legally true and living accordingly.

Practically, it looks like refusing to feed a temptation before it grows, cutting off the input, the habit, the relationship, or the scroll of the thumb that keeps giving sin oxygen. It looks like naming a specific sin honestly rather than excusing it, bringing it to God in confession rather than hiding it (1 John 1:9), and replacing the old pattern with something better rather than leaving an empty space sin can refill (Ephesians 4:22-24).

It is uncomfortable by design. Crucifixion always is. But it is not despair; it is the necessary, painful path to the freedom and joy that sin only ever pretended to offer.

This is also a communal task, not a purely private one. Believers are called to "encourage one another daily" (Hebrews 3:13) and to confess sins to each other so they can pray for one another and be healed (James 5:16). A temptation named out loud to a trusted friend loses much of the secrecy it depends on to grow.

None of this is achieved by sheer grit. Paul's confidence rests entirely on union with Christ: "I have been crucified with Christ and I no longer live, but Christ lives in me" (Galatians 2:20). The power to put sin to death does not come from you trying harder; it comes from the Spirit of the risen Christ living in you.

So crucify the flesh, in reliance on the One who already crucified it with himself, and trust that every small death to sin is a step toward the resurrection life he has already secured for you.