"Flesh" in Scripture carries two distinct but related meanings that must never be confused. (1) Neutral sense: The physical body, human nature, or humanity in its creaturely dependence on God (Genesis 2:23; John 1:14 — "the Word became flesh"). In this sense flesh is good — God became it. (2) Ethical/Pauline sense: The fallen orientation of the human will that is bent toward self-gratification and autonomy from God (Romans 7–8; Galatians 5). Paul's "works of the flesh" (Gal 5:19–21) are not merely bodily sins — they include idolatry, strife, and envy. The flesh is the posture of the creature acting as though it were the Creator. The Spirit and the flesh are at war in the believer (Gal 5:17) — and the victory is won by walking in the Spirit, not by willpower in the flesh.
FLESH — n. [Sax. flaesc; Goth. flæsk.] 1. In a general sense, the body of animals; the muscular parts of an animal body, as distinguished from the skin, bones and viscera. 2. Animal food, as distinguished from vegetable. 3. The body, as distinguished from the soul. 4. Animal nature; animals collectively. "All flesh had corrupted his way." — Gen 6:12. 5. Kindred; stock; near relation. "He is our brother, our flesh." — Gen 37:27. 6. In theology, the carnal appetites and inclinations; that nature in man which is destitute of divine grace. "The works of the flesh are manifest." — Gal 5:19. 7. Human nature; the condition of man in his natural state, as distinguished from the spiritual state. "The Word was made flesh." — John 1:14.
• John 1:14 — "And the Word became flesh and dwelt among us, and we have seen his glory."
• Romans 8:5–6 — "Those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit set their minds on the things of the Spirit."
• Galatians 5:16–17 — "Walk by the Spirit, and you will not gratify the desires of the flesh."
• Romans 7:18 — "For I know that nothing good dwells in me, that is, in my flesh."
• Galatians 2:20 — "The life I now live in the flesh I live by faith in the Son of God."
Two opposite errors plague modern Christianity. First, Neo-Gnostic dualism — treating the physical body as inherently evil, thus shrinking "flesh" to mean only bodily/sexual sins. This misses Paul's point that pride, ambition, and religious self-righteousness are equally "fleshly." Second, therapeutic self-acceptance — rebranding the flesh's desires as authentic self-expression that God affirms. "Follow your heart" theology runs directly against the biblical warning: the flesh is not your true self to be celebrated; it is the fallen self to be crucified (Gal 5:24). The solution is not self-hatred but Spirit-walking.
PIE *plēk- → Proto-Germanic *flaiski → Old English flǣsc → "flesh"
Hebrew: בָּשָׂר (basar, H1320)
Neutral uses: physical flesh, body, humanity (Gen 2:23; Ps 65:2)
Theological use: human frailty before God ("all flesh is grass" — Isa 40:6)
Greek: σάρξ (sarx, G4561)
NT uses (147 occurrences):
• Physical flesh/body: Luke 24:39, John 1:14
• Pauline ethical sense: fallen human nature (Romans 7–8; Gal 5)
• "Kata sarka" (κατὰ σάρκα) — "according to the flesh" = human perspective/nature
Contrast: πνεῦμα (pneuma, G4151) — Spirit
The sarx/pneuma tension is the engine of Paul's ethical teaching