1 Corinthians5
Judging Immorality in the Church
The Danger of Leaven
Clarification on Social Separation
Study Notes for 1 Corinthians 5
Verse 1
The specific sin (a man having his father’s wife) was considered incestuous even under Roman law (likely his stepmother, as the father was possibly still alive). Paul emphasizes the severity, noting it was scandalous even among non-Christians.
Verse 2
Paul condemns their 'puffed up' attitude, which suggests they tolerated the sin, perhaps viewing it as a sign of their radical freedom in Christ. They should have mourned the presence of sin and initiated discipline.
Verse 5
“Deliver such an one unto Satan” refers to excommunication, removing the person from the protective fellowship of the church. This harsh measure is intended to shock the individual into repentance, saving the spirit through the destruction of the flesh (the sinful nature).
Verse 6
The leaven metaphor, common in Judaism (especially around Passover), illustrates how a small amount of sin or false teaching can quickly corrupt the entire community. Paul warns that their tolerance endangers the whole church.
Verse 7
The command to 'purge out' links the removal of sin to the Jewish practice of removing all leaven before the Passover Feast. Christ is identified as the sacrificial Passover Lamb, establishing believers as inherently 'unleavened' (holy in status).
Verse 8
Since Christ has been sacrificed, believers are now perpetually 'keeping the feast' (living the Christian life), which must be characterized by sincerity and truth, not malice and wickedness (the spiritual leaven).
Verse 9
Paul begins clarifying a misunderstood instruction from a previous, non-extant letter, stressing that social separation is necessary to maintain the purity of the church community.
Verse 10
Paul notes that complete separation from sinners in the outside world is impossible and would require leaving society entirely. The responsibility of church discipline is focused internally.
Verse 11
The list defines what constitutes 'wickedness' among those 'called a brother.' The command 'with such an one no not to eat' signifies a complete break in fellowship, including exclusion from the Lord’s Supper, the ultimate step of excommunication.
Verse 12
Paul emphasizes the boundary of the church’s authority: they are responsible only for judging and disciplining their own members ('them that are within').
Verse 13
The chapter concludes with a direct command for excommunication, likely quoting or adapting the disciplinary principle found in Deuteronomy 13:5, demanding the removal of the wicked person from the community.