📖 Biblical Definition
Crucifying the flesh is the active, daily discipline of putting indwelling sinful desires to death by the Spirit (Romans 8:13; Galatians 5:24; Colossians 3:5). It is not managing the flesh, not negotiating with it, not finding balance — it is execution. Paul’s verbs are violent: mortify, put off, crucify. The cross is not a metaphor here; it is the actual instrument by which Christ’s death is applied to indwelling sin in every member. John Owen warned: "Be killing sin or it will be killing you." The Christian man wages this war by Scripture, prayer, accountability, and fasting — and he wages it daily, because the flesh that survives until evening will rise again at dawn.
📜 Webster 1828 Definition
CRUCIFY: To put to death by nailing to a cross; figuratively, to mortify or subdue the flesh.
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1. To nail to a cross; to put to death by this Roman mode of execution. 2. Figuratively, to mortify, to subdue or destroy the power of the carnal nature. The believer crucifies the flesh by the agency of the Spirit, refusing its dominion daily.
📖 Key Scripture
Galatians 5:24 — "And those who are Christ's have crucified the flesh with its passions and desires."
Romans 6:6 — "Knowing this, that our old man was crucified with Him, that the body of sin might be done away with, that we should no longer be slaves of sin."
Romans 8:13 — "For if you live according to the flesh you will die; but if by the Spirit you put to death the deeds of the body, you will live."
Colossians 3:5 — "Therefore put to death your members which are on the earth: fornication, uncleanness, passion, evil desire, and covetousness, which is idolatry."
⚠️ Modern Corruption
Modern grace teaching has retired the language of mortification, calling sin a mere wound to be soothed. Scripture calls the flesh an enemy to be executed.
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The therapy-shaped pulpit hesitates to speak of putting anything to death. Sin is reframed as woundedness, lust as misdirected longing, pride as wounded identity. The cross is reduced to a hug. The result is Christians who feel deeply about sin and never kill it.
Paul does not blink: those who are Christ's have crucified the flesh. Crucifixion is slow, public, and final. The disciple who learns mortification by the Spirit stops bargaining with appetites that mean to bury him and starts swinging the hammer Christ already provided.
🔗 Greek & Hebrew Roots
Greek stauroo (to crucify) and thanatoo (to put to death). Hebrew muth — to die, kill.
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G4717 — stauroo — to crucify, fix to a cross
G2289 — thanatoo — to put to death, mortify
G3499 — nekroo — to make dead, deaden, mortify
Usage
"You do not negotiate with what God commands you to kill."
"Mortify, or be mortified."
"The flesh dies daily — or it reigns daily."