1 Corinthians 5:6

Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump?

1 Corinthians 5:6 (KJV)

Context

Paul addresses the Corinthian church with a blunt rebuke: “Your glorying is not good.” The word “glorying” (kauchēma) means a ground or matter of boasting. The Corinthians were proud of their outward prosperity, their teachers, and their wisdom, yet they tolerated a serious sin in their midst. Their pride was misplaced because they failed to see the danger that a small, tolerated sin posed to the whole fellowship.

Paul then asks a rhetorical question: “Know ye not that a little leaven leaveneth the whole lump?” In ancient baking, leaven was a small piece of fermented dough that, when mixed into a batch, permeated and affected the entire lump. In Scripture, leaven often symbolized corruption or impurity. Paul uses this metaphor to warn that even a little sin, if left unchecked, spreads its corrupting influence through the whole church.

Meaning

The metaphor of leaven carries several implications. First, sin spreads: just as leaven works through the whole lump, sin has the potential to corrupt the entire community. This highlights the need to deal with sin promptly and decisively. Second, church discipline is necessary: Paul’s words point to the instruction that follows in 1 Corinthians 5, where he tells the church to remove an individual involved in sexual immorality from their midst. Third, the church bears corporate responsibility: the actions of one member can impact the whole body, so believers must hold one another accountable and maintain a high standard of righteousness.

Biblical connections

The immediate context (1 Corinthians 5:1-8) shows Paul addressing a specific case of sexual immorality. The church was proud and complacent rather than mourning over this sin. Paul’s command to “purge out therefore the old leaven” (1 Corinthians 5:7) connects the metaphor to the Jewish Passover, when all leaven was removed from homes. This sets up the profound truth that “Christ our passover is sacrificed for us” (1 Corinthians 5:7). Because Christ, the true Passover Lamb, has been sacrificed, believers are to be a new, unleavened lump, living in purity and sincerity. The leaven of malice and wickedness must be replaced with the unleavened bread of sincerity and truth (1 Corinthians 5:8).

Application

This verse reminds Christians to be vigilant against the influence of sin and to address it promptly and effectively within the church community. It underscores the importance of maintaining moral purity and upholding the integrity of the body of believers. When we are tempted to boast, we should first examine our own condition and the state of our fellowship.

Reflection

Consider whether your church or your own heart is tolerating a “little leaven” that could spread. Paul’s warning is not meant to create fear but to call God’s people to holiness and mutual care. Because Christ has been sacrificed for us, we are free to live as a new lump, sincere and true.