I Corinthians 6:18 · Bible study
1 Corinthians 6:18 Commentary: Flee Sexual Immorality
Greek · 11 what the commentators say
Meaning in one sentence
Paul's command to flee porneia rests on its unique bodily harm. Lexical insights from φεύγετε and the debate over 'outside the body.' Scholarly and pastoral.
Research Summary
- Meaning: Sexual immorality is a sin uniquely directed against one’s own body, requiring immediate and continual flight.
- Key words: Φεύγετε (flee, present imperative); πορνεία (sexual immorality); ἐκτὸς τοῦ σώματος (outside the body); σῶμα (body as God’s possession and temple).
- Main debate: Whether “every sin is outside the body” is Paul’s own statement or a Corinthian slogan he qualifies, and whether it is absolute or comparative.
- Theological theme: The body’s redemption: created for the Lord, joined to Christ, indwelt by the Spirit, and destined for resurrection.
- Best use: Pastoral teaching on sexual ethics that grounds behaviour in identity rather than mere prohibition, and encourages flight through awareness of God’s presence.
Translation Comparison
BSB Berean Standard Bible 2020
Flee from sexual immorality. Every other sin a man can commit is outside his body, but he who sins sexually sins against his own body.
WEB World English Bible 2000
Flee sexual immorality! “Every sin that a man does is outside the body,” but he who commits sexual immorality sins against his own body.
KJV King James Version 1769
Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.
ASV American Standard Version 1901
Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.
YLT Young's Literal Translation 1898
flee the whoredom; every sin--whatever a man may commit--is without the body, and he who is committing whoredom, against his own body doth sin.
Darby Darby Bible 1890
Flee fornication. Every sin which a man may practise is without the body, but he that commits fornication sins against his own body.
Douay-Rheims Douay-Rheims Bible 1899
Fly fornication. Every sin that a man doth is without the body: but he that committeth fornication sinneth against his own body.
Translations in other languages (10 available)
Huid la fornicación. Cualquier otro pecado que el hombre hiciere, fuera del cuerpo es; mas el que fornica, contra su propio cuerpo peca.
Fugi do pecado sexual. Todo pecado que o ser humano comete é fora do corpo; mas o que pratica pecado sexual, peca contra seu próprio corpo.
Fuyez l’ impudicité. Quelque autre péché qu’ un homme commette, ce péché est hors du corps; mais celui qui se livre à l’ impudicité pèche contre son propre corps.
Fliehet der Hurerei! Alle Sünden, die der Mensch tut, sind außer seinem Leibe; wer aber hurt, der sündigt an seinem eigenen Leibe.
Vliedt de hoererij. Alle zonde, die de mens doet, is buiten het lichaam, maar die hoererij bedrijft, zondigt tegen zijn eigen lichaam.
Fuggite la fornicazione. Ogni altro peccato che l’uomo commetta è fuori del corpo; ma il fornicatore pecca contro il proprio corpo.
Uciekajcie przed wszeteczeństwem. Wszelki grzech, który by człowiek popełnił, oprócz ciała jest; lecz kto wszeteczeństwo płodzi, przeciwko swemu własnemu ciału grzeszy.
Бегайте блуда; всякий грех, какой делает человек, есть вне тела, а блудник грешит против собственного тела.
你們要逃避 淫行。人 所 犯的，無論 甚麼罪，都在 身子 以外，惟 有行 淫的，是得罪 自己 的身子。
Keep away from the desires of the flesh. Every sin which a man does is outside of the body; but he who goes after the desires of the flesh does evil to his body.
Verse in Context
Original Language (Koine Greek)
New Testament · Koine Greek · I Corinthians 6:18
Source: STEPBible TAGNT/TEHB (CC-BY 4.0). Click or tap a morphology code to see the full parsing.
Scholars' Consensus
Commentators agree that Paul delivers a direct command: flee sexual immorality (porneia). The Greek present imperative Φεύγετε (pheugete) carries urgency, ongoing, habitual flight, not a one-time choice. Barnes notes that “the word ‘flee’ has force and emphasis”; the only safe strategy is retreat without reasoning. The second clause, “Every sin that a man does is outside the body,” is widely read as a Corinthian slogan Paul partially corrects (Cambridge Bible; Lange). He does not deny that other sins affect the body, but he insists that fornication uniquely strikes against the body itself. Calvin explains that while theft or drunkenness also stain the body, “fornication leaves a stain impressed upon the body” in a way others do not. Gill adds that the body becomes both instrument and object of the sin. The consensus holds that sexual immorality is not merely external behaviour but a violation of the body’s created purpose for the Lord.
How settled is the interpretation?
Interpretive difficulty: Medium
Main views:
- Comparative interpretation: Calvin, Cambridge Bible: other sins affect the body externally; fornication uniquely defiles and alienates the body itself.
- Absolute interpretation: Some early and popular readings: other sins truly are ‘outside the body,’ only sexual sin directly sins against the body.
- Slogan-quotation view: Lange, many modern scholars: the first clause is a Corinthian saying Paul partially corrects to show that even if other sins are external, this one is not.
What is clear: Paul commands flight from sexual immorality because it sins against the body in a way that is uniquely direct and destructive, and he roots this in the body’s identity as a member of Christ and temple of the Spirit.
What Scholars Agree and Debate
| Topic | Agreed | Debated |
|---|---|---|
| The meaning of 'outside the body' | The phrase highlights that fornication involves the body in a unique way, distinct from other sins. | Some commentators (Calvin, Cambridge Bible) take it as a comparative: other sins affect the body from without, but this one works within and against the body itself. Others (e.g., some early readers) understood it absolutely, that other sins do not truly affect the body at all. |
| Whether the statement is Paul’s own or a quotation | The verse presents two contrasting statements: a broad claim and a specific correction. | Many modern scholars (reflected in Lange’s apparatus) see the first clause as a Corinthian slogan Paul is challenging. Older commentators often treated the whole verse as Paul’s own teaching. |
| Application to women vs. men | The command applies to all Christians regardless of gender. | The Greek uses masculine forms (ἄνθρωπος, masculine participle). Poole notes that though directed properly to the masculine, the female is comprehended. Some traditions have historically emphasized the verse’s force more for men, while contemporary readings apply it equally. |
| Does this verse condemn polygamy? | The verse addresses all illicit sexual union, including adultery and fornication. | The Cambridge Bible suggests it contains a condemnation of polygamy because it violates the ‘one flesh’ principle from Genesis. Other commentators limit the scope to sexual sin outside marriage, not addressing polygamy directly. |
Historical & Cultural Context
First-century Corinth was a wealthy, cosmopolitan port city infamous for its moral looseness. Temple prostitution (especially at the Temple of Aphrodite) and widespread acceptance of sexual relationships outside marriage meant that porneia was not considered a serious wrong by many pagans. Some Corinthian believers, influenced by a slogan Paul quotes earlier in the chapter, “All things are lawful for me” (v. 12), concluded that their Christian liberty freed them from sexual restrictions. They may have even cited Greek philosophical ideas that the body was inferior to the soul, making bodily actions morally neutral.
Paul counters by elevating the body’s significance. He has already argued in vv. 13, 17 that the body is for the Lord, that believers’ bodies are members of Christ, and that sexual union creates a “one-flesh” bond (quoting Genesis 2:24). The immediate context of chapter 6 moves from lawsuits among believers to a forceful rejection of sexual sin. The command “Flee!” echoes Joseph’s flight from Potiphar’s wife (Genesis 39:12), a pattern the Corinthians knew. Paul’s target is not just the act but the entire Greco-Roman mindset that divorced bodily behaviour from spiritual identity.
Literarily, v.18 sits at the climax of six arguments against porneia (vv. 12, 20). Each argument appeals to the believer’s new identity and destiny: resurrection (v.14), union with Christ (v.15, 17), and the indwelling Holy Spirit (v.19). The warning is grounded not in prudishness but in a high view of the body as created and redeemed by God.
Textual Notes
The supplied sources and textual apparatus note no significant variant readings for 1 Corinthians 6:18. The Greek text is stable across the major manuscript families. The only minor variation is the omission of the definite article before sōma in some late manuscripts, but this does not change the sense.
Reception History
From the earliest centuries, this verse was central to Christian sexual ethics. Church fathers like Tertullian and Augustine cited it to argue that sexual sin degrades the body that God created for holiness. The medieval church used it in penitential manuals, emphasizing flight and bodily purity. The Reformers, Calvin, Luther, and the Geneva Bible, applied the verse to reject both monastic withdrawal and libertine licence, insisting that the body is to be honoured in daily life as the Lord’s. In modern times, the verse has been invoked in debates about sexuality, marriage, and the body’s meaning. Across traditions, the consistent thread is that Christian hope includes the redemption of the body, not escape from it.
Preaching This Verse
Three-point outline
- The command: flee, never negotiate. The Greek present imperative (Φεύγετε) implies a lifestyle of escape. Joseph ran from Potiphar’s wife (Gen 39:12). Barnes: “Man should escape from it; he should not stay to reason about it.” Fornication’s power lies in its deceitful appeal; reasoning can become contamination.
- The claim: every other sin is “outside the body.” This is a comparative statement, not an absolute one. Calvin and the Cambridge Bible agree that other sins affect the body from without (e.g., a thief’s hands, a drunkard’s stomach), but fornication makes the body itself the instrument of sin and object of sin simultaneously. It is a rebellion against the body’s God-given purpose.
- The consequence: sinning against your own body. The word hamartanei (sins) means “to miss the mark.” Sexual sin misses the purpose of the body, which is “for the Lord” (v.13). It defiles, dishonours, and, as Clarke starkly warns, “strikes immediately at the basis of the constitution.” Paul’s remedy is not isolation but deeper union with Christ (v.17) and awareness of the Spirit’s temple (v.19).
Five-point outline
- The setting: Corinth’s casual view of sex and false claims of liberty.
- The verb: Φεύγετε, urgent, present, continuous flight.
- The slogan: “Every sin is outside the body”, Paul’s partial correction.
- The uniqueness: fornication sins against the body, not merely through it.
- The antidote: the body belongs to Christ, is a temple of the Spirit, and will be raised.
Illustration hooks
- A fire drill. You do not stop to discuss whether the fire is real. You exit. The command to flee treats sexual temptation like a fire: the only safe response is immediate departure.
- A contaminated well. Other sins may dirty your hands, but sexual sin poisons the water source itself, the body that God designed to be His temple.
Questions your congregation is asking
- Does Paul mean that sexual sin is unforgivable or worse than other sins? (No, but it carries unique bodily consequences that other sins do not.)
- If I have already fallen into this sin, is there hope? (Yes, 1 Cor 6:11 lists sexually immoral people whom God washed and sanctified.)
- How far must I flee? Do I cut off friendships, change jobs, leave a home? (Flight includes removing occasions; wisdom and pastoral counsel help discern boundaries.)
Leading a Discussion
This verse often raises strong feelings. Paul’s command feels absolute, and the comparison “every sin is outside the body” puzzles many. The goal of this discussion is not to shame but to understand why the Bible treats sexual ethics as central to bodily holiness. Read 1 Corinthians 6:12, 20 together before focusing on verse 18.
Discussion questions
- Why do you think Paul uses the word “flee” (φεύγετε) rather than “resist” or “control yourself”? What does that imply about the danger of sexual temptation?
- What does Paul mean by “every sin that a man does is outside the body”? How does the immediate context (vv. 15, 17) help answer that?
- Calvin and others note that this statement is comparative: fornication affects the body in a way that other sins do not. Do you agree? How might theft or gluttony also affect the body?
- Look at the word “sins” (ἁμαρτάνει) in the second half. Thayer defines it as “to miss the mark.” What “mark” is sexual sin missing regarding the body’s purpose?
- How does the surrounding passage (vv. 14, 19, 20) frame the body’s destiny? Does that change how you view your own body?
- Paul quotes Genesis 2:24 in v. 16 to ground his argument. Why does the “one flesh” principle make sexual sin uniquely serious?
- In a culture that often celebrates sexual freedom, how can Christians hold this teaching in a way that is both truthful and compassionate?
Word Study
The key original-language words in this verse. Select any word for its full lexicon entry — meaning, every occurrence in Scripture, and related words.
Cross-References
Source: Treasury of Scripture Knowledge (TSK, public domain)
| Genesis 39:12 | She caught him by his garment, saying, “Lie with me!” He left his garment in her hand, and ran outside. |
| Genesis 39:18 | and as I lifted up my voice and cried, he left his garment by me, and ran outside.” |
| Proverbs 2:16 | to deliver you from the strange woman, even from the foreigner who flatters with her words, |
| Proverbs 2:19 | None who go to her return again, neither do they attain to the paths of life. |
| Proverbs 5:3 | For the lips of an adulteress drip honey. Her mouth is smoother than oil, |
| Proverbs 5:15 | Drink water out of your own cistern, running water out of your own well. |
| Proverbs 6:24 | to keep you from the immoral woman, from the flattery of the wayward wife’s tongue. |
| Proverbs 6:32 | He who commits adultery with a woman is void of understanding. He who does it destroys his own soul. |
Interlinear and lexical data from STEPBible (CC BY 4.0). Cross-reference data from OpenBible.info (CC BY 4.0). Commentaries are public domain.
For personal reflection
Read the devotional page — prayer, application, and "for families"
What the Commentators Say
11 public-domain commentaries, condensed into plain language.
Adam Clarke's Commentary Methodist/Wesleyan 1826
Clarke warns that sexual sin is uniquely destructive to the body, cutting life short by God's just judgment. He insists that reasoning with such temptation is fatal; the only safe response is to flee without a moment's debate.
Barnes' Notes on the Bible Protestant 1832
Barnes insists that this sin is unique in requiring immediate flight, not reasoning or resistance. Even an impure thought leaves pollution, so the only safety is to turn away without reflection. He also stresses that this sin uniquely and directly harms the body itself, wasting its energies and shortening life.
Calvin's Commentaries Reformed 1564
Calvin argues that fornication leaves a unique, lasting stain on the body that other sins do not. He does not deny that theft, murder, or drunkenness also defile the body, but insists that fornication imprints a disgrace in a way those sins do not. The difference is one of degree, not kind.
Cambridge Bible for Schools and Colleges Anglican 1880
The commentator stresses that sexual sin is unique: other sins affect the body from outside, but this one takes the whole body and makes it an instrument of sin. The Greek word suggests "going astray" from the body's created purpose, which the commentator ties to the one-flesh principle and even sees as a condemnation of polygamy.
Geneva Bible Notes Reformed 1599
The Geneva Bible note draws a sharp distinction: other sins a person commits are external to the body, but sexual immorality is unique in that it directly sins against one's own body. This makes fornication a particularly intimate violation, not merely an outward act.
Gill's Exposition of the Bible Baptist 1748
Gill argues that fornication is uniquely destructive among sins because it sins directly against the body itself. Other sins use the body but involve external objects, while fornication defiles and dishonors the body, impairing its health and bringing shame upon it.
Jamieson-Fausset-Brown Commentary Protestant 1871
JFB draws a sharp distinction between sexual sin and every other kind. Other sins, even serious ones like gluttony or drunkenness, remain external to the body's true nature. But the fornicator directly violates the body itself, turning what belongs to the Lord into one flesh with a harlot.
Lange's Commentary Reformed 1857
Lange argues that Paul's statement "All things are lawful for me" is not an opponent's objection but a genuine Christian principle that requires careful limits. The apostle affirms believers' freedom but immediately qualifies it by expediency and by refusing to let anything gain power over him. For Lange, the body's dignity as a member of Christ and temple of the Holy Spirit makes fornication a unique sin that alienates what belongs to the Lord and profanes what is destined for resurrection.
Matthew Henry's Commentary Reformed/Presbyterian 1710
Henry draws a direct connection between the Corinthians' mistaken freedom about foods and their deeper error about sexual immorality. Just as some thought Christian liberty gave them license to eat what the apostles had forbidden, others reasoned that fornication was also permissible since local law did not condemn it.
Vincent's Word Studies Evangelical 1887
Vincent draws a sharp distinction: other sins happen outside the body, but in fornication the body itself becomes the subject of the sin, given over both inwardly and outwardly to another. He compares this to fleeing a mad and furious master, where the body is no longer merely an instrument but fully involved.
Wesley's Explanatory Notes Methodist/Wesleyan 1754
Wesley stresses that fornication is unique among sins because it directly pollutes and degrades the body itself, reducing it to the level of brute beasts. Other sins against a neighbour affect an external object and do not immediately defile the body in this way.