How Far Is Too Far? 1 Corinthians 6:18-20 Answers
Short answer: Scripture does not answer the question how far is too far by drawing a detailed line for us to approach as closely as possible. It says, in 1 Corinthians 6:18, "Flee sexual immorality! " The verb is flight, not negotiation. The line is real, but the commanded posture is distance, not proximity. What is more, 1 Corinthians 6:18 says the one who commits sexual immorality sins against his own body, which reframes the whole discussion: the issue is not merely where a rule is broken but what a person is doing to himself. So the better question is not how close can I get, but what am I pursuing, and by what power? The New Testament consistently calls believers to purity of heart, not to careful management of the edge.
Why the question itself reveals a heart posture
The very shape of the question how far is too far is revealing. It assumes that the goal is to get as close to sin as possible without technically crossing over. That is the posture of a person asking a lawyer where the legal boundary is, not the posture of a person who loves God and wants to please him. When the Corinthians raised similar questions about the body and freedom, Paul answered on a different plane entirely. He refused to play the boundary game and instead spoke of ownership: the body is not for sexual immorality but for the Lord. The question of proximity already suggests the heart has been tilted toward the edge.
Consider how this works in ordinary life. If a married person asks how much time alone with a tempting coworker is too much, the question has already conceded something. The wise answer is not a number of minutes. It is a different aim altogether. In the same way, the person asking how far is too far physically has usually already begun to entertain what they say they want to avoid. 2 Timothy 2:22 addresses this directly: "Flee from youthful lusts; but pursue righteousness, faith, love, and peace with those who call on the Lord out of a pure heart. " Notice the two directions: flee from one thing, pursue another. That is not a boundary debate. That is a redirection of desire.
This does not mean that specifics do not matter. Christians have often recognised that Scripture speaks plainly about sexual sin as a category and calls for self-control in thought, word, and deed, and also that wisdom requires applying that to concrete situations. The mistake is not in wanting clarity. The mistake is in treating God as an adversary to be outmanoeuvred. James says to draw near to God and he will draw near to you. The person who wants nearness to God will not need a map of the cliff edge, because they are not walking toward it.
So the heart question needs to be asked honestly. Am I asking this because I want to obey God and need wisdom about a particular situation, or am I asking because I want permission to go further than I know is right? Those two questions sound similar but come from opposite places. The first is the prayer of a disciple seeking wisdom. The second is the prayer of a heart looking for loopholes. The difference between them is the difference between fear of the Lord and fear of getting caught. A great deal of pastoral help depends on telling these two apart before trying to answer anything.
Flee means distance, not careful approach
The first word in the primary passage is a command that sets the tone: "Flee sexual immorality! " Paul does not say resist it, manage it, or set appropriate limits around it. He says run. That is a word drawn from the body's instinct for survival. When a person sees fire or an attacker, they do not calculate the precise safe distance. They move away as fast as possible. The very nature of the command assumes proximity is dangerous and that the only safe response is to break contact. To turn that into a question of how close one may comfortably remain is to neutralise the command.
This same verb appears in 1 Corinthians 10:14, where Paul tells the church to flee from idolatry, and again in 2 Timothy 2:22, where he tells Timothy to flee youthful lusts. The consistency matters. In Scripture, the response to a lust that entangles is not drawn-out negotiation but decisive departure. The word assumes that the temptation is not simply an external hazard but something with a strong pull, and that the pull does not respond well to delay. Joseph in Genesis 39:12 did not stand in the room and reason about how long he could safely stay. He left his garment and ran. That is what flight looks like in practice.
There is wisdom here for ordinary life. Flight might mean changing what you watch, what you read, who you message at night, how late you stay somewhere, or which direction you take home. It might mean telling a friend about a pattern you have kept hidden, installing accountability, or ending a relationship that has been deliberately feeding a desire that is not honouring to God. These are not dramatic acts of legalism. They are the ordinary practice of a person who believes the command to flee is given for his good. The command to flee is not a burden; it is a gift that assumes God knows what we are made of.
And notice what flight is not. It is not the same as fleeing when it is too late. 1 Corinthians 10:13 says God will not allow you to be tempted above what you are able, but will with the temptation also make the way of escape, that you may be able to endure it. The way of escape is available, but it usually appears before the fall, not after. The person who waits until the last moment has often walked past several exits. Fleeing is not cowardice; it is the wise response to a real danger. The one who runs from sin runs toward something better, and the next section explains what that is.
The body belongs to the Lord, not to yourself
The reason Paul refuses to treat sexual sin as an ordinary matter is theological. In 1 Corinthians 6:18 he writes, "Every sin that a man does is outside the body," but he who commits sexual immorality sins against his own body. Some interpreters have puzzled over this sentence, because sins like drunkenness and self-harm also affect the body. Paul's point seems to be that sexual sin is uniquely a sin of the body against the body. It does not merely use the body as an instrument; it engages it in a way that unites it to another person and, by implication, against the Lord who owns it. That is why he says the body is not for sexual immorality.
Paul goes on to ground this in creation and redemption. The body is not a disposable shell that the soul will eventually shed. It is the temple of the Holy Spirit, and the Spirit has been given to the believer. That means the body is not neutral property to be used as its owner pleases. It has been bought with a price. In 1 Corinthians 6:20 Paul draws the conclusion: glorify God in your body. The whole argument turns on ownership. If you belong to Christ, then your body belongs to Christ, and what you do with it is not merely your private business.
This is a very different framework from the one our culture often uses. Many today assume the body is personal property, and that sexual activity is a private matter between consenting adults with no bearing on anyone else. Paul's response is not merely that God has rules about sex, but that the believer's body is not his own. He has been purchased. To use the body for sexual immorality is not just to break a rule; it is to take something that belongs to Christ and use it for a purpose Christ did not buy it for. That is a far more serious matter than a list of prohibitions.
And this is good news, not merely a threat. If the body belongs to the Lord, then the body's destiny is bound up with the Lord's resurrection. Paul says in the same chapter that God raised the Lord and will also raise us up by his power, and that the body is for the Lord and the Lord for the body. The body is not destined to be discarded but to be raised and glorified. That is why what believers do with it now matters. Sexual purity is not contempt for the body; it is honour for the body as the dwelling place of the Spirit and the future subject of resurrection.
Purity as pursuit, not merely restraint
One of the most practical things Scripture does with this topic is give the command a positive direction. 2 Timothy 2:22 says to flee youthful lusts, but it does not stop there: it says instead to pursue righteousness, faith, love, and peace with those who call on the Lord out of a pure heart. The alternative to lust is not merely an empty space where lust used to be. It is a set of good things actively pursued, and pursued in company with others. That last phrase matters: with those who call on the Lord out of a pure heart. Purity is not a solo project.
This is one reason isolation is so dangerous in this area. A person trying to be pure alone, without accountability, without a church, without honest friendship, is trying to pursue peace while running away from everyone who might help. Paul's instruction assumes a community of people who share the same aim. That means the practical question how far is too far is often best answered in the presence of a trusted believer who knows your history and can speak into it, not in the privacy of your own reasoning. Sin loves secrecy, and confession breaks its power.
Christians have differed about the specific applications of this principle. Some would say certain activities are always wrong; others would place the line differently on matters like physical affection before marriage. What is not in dispute in Scripture is the direction of travel. The believer is not to be organising life around how close to sin he can safely stand, but around the pursuit of holiness, and the New Testament consistently treats sexual immorality as belonging to the old life, not the new. Colossians tells believers to put to death what belongs to the earthly nature, and sexual immorality is named at the top of the list.
So the question how far is too far can be answered, but only after it has been reframed. The real question is not how close can I get, but how do I pursue what God commands. And when that becomes the governing question, the precise edges of the line become less pressing, because the whole direction has changed. The person running away from danger and running toward righteousness is not looking backwards over his shoulder to see how near he can stay. He is looking forward to where he is going. That is the freedom the gospel gives.
Guard the eyes and make no provision
A large part of this battle is fought before any physical line is approached. Romans 13:14 says, "But put on the Lord Jesus Christ, and make no provision for the flesh, for its lusts. " The phrase make no provision is worth dwelling on. It means to plan ahead for the flesh, to lay in supplies for a desire you know will demand them later. If you know you will be alone with someone at a certain time, if you know certain apps or websites are within reach, if you know late nights are your weak hour, then not making provision means deciding in advance not to set the table for that sin.
Jesus spoke in similarly searching terms about the eyes. In the Sermon on the Mount he said that everyone who looks at a woman to lust after her has committed adultery already in his heart. That teaching has often been softened into a vague warning, but it is radical. It places the battlefield in the interior life, not merely in the body. It means that sexual purity is not only about what you do but about what you look at, what you linger on, what you rehearse in your imagination. If the eyes are the gateway, then guarding them is not optional for the person who wants to obey.
This is where the modern world creates particular pressures that earlier generations did not face. Pornography is available instantly and privately on devices carried everywhere. Social media normalises images and conversations that would once have required deliberate effort to find. A person may be physically far from a sexual partner and still be feeding the very desires that the command to flee is meant to address. Making no provision for the flesh probably means, for many believers, setting real limits on private screen use and asking someone else to help hold those limits in place.
None of this is grounds for pride. The one who guards his eyes is not more righteous than the one who struggles; he is simply using the means God gives. Self-control is a fruit of the Spirit, which means it is grown by walking with the Spirit, not manufactured by sheer willpower. Galatians lists self-control among the fruit of the Spirit, right alongside love and joy. So the practical fight is not a fight for self-reliance. It is a fight for dependence, carried out by a person who knows he cannot keep himself and therefore keeps close to Christ.
What the will of God actually is here
Many people treat sexual purity as a restriction imposed by a reluctant God. 1 Thessalonians 4:3 says something very different: "For this is the will of God: your sanctification, that you abstain from sexual immorality. " Abstaining is not a burden God regrets placing on his children. It is part of the sanctification he is working in them. The same letter goes on to tell believers to control their own body in holiness and honour, not in the passion of lust, and describes the pagans who do not know God as living that way. In other words, sexual self-control is not merely a Christian rule; it is a mark of a life that has been changed by knowing God.
That reframes the whole discussion once more. If it is God's will for us to be sanctified, then pursuing purity is not a grim duty but a cooperation with God's good purpose for us. Sanctification is what God is making us into. Hebrews speaks of the Father disciplining his children because he loves them, and growing in holiness is part of his loving fatherly work. The person who says yes to purity says yes to what God is doing in them. The person who keeps asking how close he can get to sin is resisting the very thing God is working to produce.
It is worth being honest about how difficult this can be. Some believers carry deep wounds from past sexual sin or from having been sinned against, and the practical task of purity can feel overwhelming. Some struggle with compulsions that will not simply be willed away. In those cases the answer is not shame but honest, unhurried help: prayer, pastoral care, and sometimes professional counsel from a wise and trustworthy Christian. God is not surprised by weakness, and he is not closer to the strong than to the struggling. The command to flee is given to people who need grace, and grace is available.
In the end, the question how far is too far will not be settled by a chart. It will be settled by a deepening love for Christ, a growing hatred of what dishonours him, and a heart that finds its satisfaction in him rather than in the edge. The person who says, with a sincere heart, I want to obey you, Lord, will find that the boundary question becomes less urgent. The line is still real. But the heart has moved. And that is what God is working for in every believer who keeps looking to him.
Biblical fidelity check
What 1 Corinthians 6:18-20 does establish is clear: sexual immorality is to be fled, not negotiated; the body is not for sexual immorality but for the Lord; the believer's body is the temple of the Holy Spirit; and the believer has been bought with a price and is therefore to glorify God with the body. What the passage does not establish is a detailed catalogue of physical acts before marriage, a precise line for every possible situation, or a spirituality that denies the goodness of the body. It also does not teach that the body is evil or that sexual desire is itself sinful. The desire was created good; the command addresses its misuse.
A common misreading is to turn the passage into a rule to be managed, treating God as a lawgiver whose requirements can be tracked and satisfied with a margin of safety. That misreading is wrong because it inverts the command. The passage says flee, and it grounds the command in ownership and redemption, not in a technical boundary. The person asking how far he can go has already begun to follow a different master. Another misreading is to hear flee and conclude that the body or sexuality itself is the problem. But the same passage teaches resurrection and honour for the body, and 1 Thessalonians 4:3 calls purity God's will for us, not contempt for what he made.
Other passages that speak to 1 Corinthians 6:18-20
It helps to read this passage alongside the wider argument of Paul's letters. The same letter opens by addressing a divided church and calling it to unity in Christ, which is the setting for all its moral teaching; you can read about that in What Does 1 Corinthians 1:10 Mean? Context, Theology, and Application. The letter also grounds the church's identity in God's faithfulness to his call, which is treated in What Does 1 Corinthians 1:9 Mean? Context, Theology, and Application. For the broader theme of being called, united, and boasting only in the Lord, see 1 Corinthians 1: Called, United, and Boasting in the Lord. And for the chapter that follows with warnings and teaching about freedom and its limits, see 1 Corinthians 10: Warnings and Freedom.
Frequently asked questions
Does the Bible say exactly how far is too far before marriage?
No, Scripture does not give a centimetre-by-centimetre rule for physical affection before marriage. It commands sexual immorality to be fled and sexual purity to be pursued. That means believers must apply real wisdom to concrete situations, and faithful Christians have sometimes differed on specific applications. What is not in question is the direction: the aim is holiness, not the closest safe approach to sin. Where the Bible gives principle rather than detail, the response is prayerful, accountable wisdom rather than a spirit of loophole-hunting.
Is the command to flee sexual immorality only about actions?
No. Jesus taught in the Sermon on the Mount that lust in the heart is already adultery, which places the battlefield in the interior life. Paul likewise tells Timothy to flee youthful lusts and pursue righteousness, faith, love, and peace. That means thoughts, glances, private fantasies, and what we choose to watch or read all fall within the scope of this teaching. The command to flee addresses the inner person, not only the outward act, because the heart is where the act begins.
What if I have already gone too far?
The gospel does not leave anyone without hope. Scripture says that if we confess our sins, God is faithful and just to forgive us and to cleanse us from all unrighteousness. The command to flee is not a sentence of condemnation on those who have failed; it is the summons to turn and run toward Christ now. Confession, honest accountability, and sometimes wise pastoral or professional help are good next steps. The Lord receives the repentant, and he is able to restore and to keep.
