3rd Quarter, 2026
Lesson 4 (July 18 - July 24, 2026)
Sin in the Church
Memory Verse: "Do you not know that your bodies are temples of the Holy Spirit, who is in you, whom you have received from God? You are not your own; you were bought at a price. Therefore honor God with your bodies" (1 Corinthians 6:19, 20, NIV).
Lesson 4, Sin in the Church, moves from the problem of division to the problem of moral failure. Having addressed factionalism in chapters 1-4, Paul now turns to something even more disturbing -- the Corinthian church is not only tolerating serious sin in its midst but apparently boasting about it. This week confronts the gap between what we know as Christians and what we actually do.
There is a concept worth sitting with: the Knowing-Doing Gap -- the disparity between what we know we should do and what we actually do. Paul described it in Romans 7: the good I want to do, I do not do. Most honest believers have felt this. But the situation in Corinth goes further -- the church as a community has become comfortable with public sin and proud of its tolerance. That is the moment Paul can no longer stay quiet.
Dissonance Between Faith and Practice
The scandal Paul addresses is a man living in an incestuous relationship with his stepmother -- a situation so serious that even pagan culture would have condemned it. Paul is not primarily shocked by the man's sin. He is shocked by the church's response: instead of mourning, they are boasting. The Corinthian church had allowed cultural tolerance to overwrite biblical conviction.
Dealing With Scandals
Paul calls for the man to be removed from fellowship -- not as cruelty but as redemptive discipline. The goal is that his spirit may be saved. Church discipline done rightly is love that refuses to pretend. Significantly, the repentant, restored man who appears in 2 Corinthians is very likely this same person -- the discipline worked.
The Body as Temple
Some in Corinth had argued that the body was made for sex the way the stomach was made for food. Paul dismantles this directly: we were set free from sin, not set free to commit it. The body belongs to Christ and is united to Him through the Spirit. Sexual immorality violates that union. The antidote is not a rule but an identity -- you were washed, sanctified, justified. The climax arrives in 1 Corinthians 6:19, 20: your body is a temple of the Holy Spirit, you were bought at a price, you are not your own.
Marriage and Conflict
Paul also addresses members taking one another to secular courts -- a failure of community that wounds the church's witness. And on marriage, rooted in Creation theology (Gen. 1:27, 28), sex belongs within a male-female covenant alone. The example Paul holds up for fleeing sexual immorality is Joseph -- a man filled with the Holy Spirit who literally ran from temptation rather than negotiating with it.
Christ Connection
Every call to holiness in this passage is rooted not in moralism but in the gospel. We were bought at a price -- the cross. That price defines our worth and sets our standard. The body that bears the Spirit of God is too valuable to offer to anything less than what God designed it for.
Applications
1. Examine honestly where the Knowing-Doing Gap exists in your own life -- where you know what is right but consistently choose otherwise.
2. Pray for your church to have courage to practice loving, redemptive discipline rather than comfortable tolerance of sin.
3. Memorize 1 Corinthians 6:19, 20 and let it shape how you see and treat your body this week.
4. If you have a conflict with a fellow believer, seek resolution within the community rather than taking it outside.
5. Reflect on Joseph -- what does it look like in your context to flee temptation rather than negotiate with it?
Discussion / Reflection Questions
- The Corinthian church was not just tolerating obvious sin -- it was apparently proud of its tolerance. How does a community of believers move from healthy grace to the kind of moral blindness Paul confronts here -- and what are the warning signs?
- Paul calls for church discipline not to punish but to restore -- and the evidence suggests it worked. Why does the church today often struggle to practice loving, redemptive discipline, and what would it require to do it well?
- Taking a fellow believer to a secular court damages both the community and its witness. How should a church handle serious internal disputes in a way that is both just and consistent with being the body of Christ?
- The argument some in Corinth made -- that the body was made for sex the way the stomach was made for food -- is theological rationalization. What are the equivalent rationalizations Christians use today to justify behavior Scripture clearly opposes?
- Your body is a temple of the Holy Spirit -- you were bought at a price. How does genuinely believing that change not just what you do with your body but how you see yourself and what you consider worth your time?