First Corinthians 5:9 is Paul reminding the church in Corinth that an earlier letter told them not to keep company with people who lived in open sexual sin. Paul is clarifying a point he had already made, and the Corinthians had misunderstood it. He wrote to a church that was proud of its tolerance, and he was addressing the believers there as a pastor and founder.
I wrote to you in my letter to have no company with sexual sinners…
1 Corinthians 5:9 (WEB)
What 1 Corinthians 5:9 Means
The phrase “I wrote to you in my letter” points to an earlier letter that is no longer preserved. Paul is saying, in effect, “I already told you this, so let me say it again.” His point was that the congregation should not treat sexual immorality within its own fellowship as acceptable. Earlier, he had discussed a specific case of a man living with his stepmother, and the church had not responded with the seriousness it should have.
The word “company” translates a Greek term that means close association or mixing together socially. Paul is not describing a general withdrawal from ordinary life. He says the difference lies in how people are joined to the community of believers. The verse does not promise that a believer will never meet sinners in daily life. It speaks about who is inside the family of the church and how that family behaves toward its own members.
The Context of 1 Corinthians 5:9
First Corinthians was written by Paul, traditionally dated to around the mid-50s AD, to a congregation he had planted in the bustling port city of Corinth. The church was gifted and lively, but it was divided and in several areas it was failing to live according to the gospel. Paul addresses questions of unity, conduct, worship, and the resurrection, and chapter 5 deals with a serious case of sexual sin that the congregation had tolerated.
The surrounding verses shed light on the verse. Paul speaks of yeast, saying that a little yeast spreads through the whole batch, and he urges the church to clear out the old yeast of malice and wickedness. Verse 10 then clarifies that he did not mean they should cut themselves off from the wider world entirely. Verse 11 explains that the concern is with someone who bears the name of brother or sister yet lives in unrepentant sin. Read this way, the verse is about the church’s own discipline, not a rule for avoiding every unbeliever.
Key Phrases in 1 Corinthians 5:9
Matthew 18:15
“If your brother sins against you, go, show him his fault between you and him alone. If he listens to you, you have gained back your brother.
(WEB)
Jesus gives a clear process for addressing sin between believers, starting with private conversation and moving toward wider help only if needed. It helps explain how the church should respond to a member who is living in sin, showing that the goal is restoration rather than rejection.
2 Corinthians 2:6-7
6 This punishment which was inflicted by the many is sufficient for such a one; 7 so that on the contrary you should rather forgive him and comfort him, lest by any means such a one should be swallowed up with his excessive sorrow.
(WEB)
In his later letter, Paul speaks about a disciplined member who has repented, urging the church to forgive and comfort him. This shows that the purpose of separation from fellowship is always the person’s return, and that the church must not keep someone excluded after genuine repentance.
A Short Prayer From 1 Corinthians 5:9
Lord, you have called your church to be holy and loving at the same time. Give me the courage to speak truth in love when someone I care about is living in sin, and the humility to remember my own need for your grace. Help me to take sin seriously without treating people as enemies, and to keep fellowship with your people in a way that honors your holiness. Guard the church from tolerating what you call wrong, and guard it from cruelty toward those who are trying to come back to you. Teach me to love well, both within your family and in the world you have placed me in. Amen.
