How does yeast relate to church discipline?
How does "a little yeast leavens the whole batch" apply to church discipline?

Setting the context

Paul addresses the Corinthian church for tolerating blatant sexual immorality within their fellowship. Rather than mourning, they were proud of their tolerance. He warns them:

“Your boasting is not good. Do you not know that a little leaven leavens the whole batch of dough?” (1 Corinthians 5:6)


Unpacking the yeast image

• In Scripture, leaven (yeast) often pictures influence that spreads silently yet pervasively.

• Even a pinch alters the entire lump; it cannot be confined to one corner.

• Paul borrows everyday kitchen experience to illustrate how unaddressed sin affects an entire congregation.


Implications for church discipline

• Sin tolerated in one member soon reshapes the moral tone of the whole body.

• Public compromise undermines the church’s witness, dulls consciences, and breeds further disobedience.

• Loving confrontation protects both the individual and the flock.

• Discipline is not optional; it is an act of obedience to Christ for the purity of His bride.


Supporting Scriptures

Galatians 5:9: “A little leaven leavens the whole batch.” The same warning applies to legalism or any deviating influence.

Matthew 18:15-17 sets out the restorative process of private reproof, witnessed confirmation, and church involvement.

2 Thessalonians 3:6 urges separation from those who persist in disorderly conduct so the church is not dragged into it.

Titus 3:10-11 instructs a second and third warning before separating from a divisive person, displaying patience yet firmness.

1 Corinthians 5:7-8: “Get rid of the old leaven, that you may be a new lump…”—Christ’s sacrifice enables a clean, unleavened community.


Practical steps for churches today

• Teach clearly what Scripture calls sin; foggy definitions breed tolerance of yeast.

• Cultivate humble accountability where members invite correction before crises erupt.

• When serious, unrepentant sin surfaces:

– Verify facts; avoid gossip.

– Confront privately with Scripture and gentleness.

– If unrepentant, involve additional witnesses, then church leadership.

– Withdraw fellowship when necessary, aiming for repentance and restoration.

• Keep communicating grace: discipline is a rescue mission, not a rejection.


The gospel motive

Christ “our Passover Lamb” has been sacrificed (1 Corinthians 5:7). Because His blood frees believers from sin’s power, the church is called to live as new, unleavened dough—pure, distinct, and radiant with His holiness. Church discipline, exercised biblically, guards that purity so the whole batch resembles the One who redeemed it.

What is the meaning of 1 Corinthians 5:6?
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