Attention: This is another post that may be abused by our unBelieving readers. But as the papal commissioner Johann Tetzel said, indulge me.

Church discipline is making a comeback. To many, Believers and unBelievers, the idea of excommunication from a church body smacks of hypocrisy and hate and generally being a Pharisee. After all, if we’re all sinners, how can we kick people out of church for sinning?

But for those who know something of formal church discipline, this is not quite what it means. It’s less about getting rid of sinners and more about getting rid of those who habitually commit public, known acts of sin and are unrepentant, or whose repentence is highly suspect. In other words, the faithful Believer is defined less by his sin and more by his reaction to it.

The Protestant reformers named three “marks by which the true church is known” – the preaching of the pure doctrine of the gospel, the pure administration of the sacraments, and the exercise of church discipline to correct faults.

Christianity Today has a series on church discipline here, where various minds apply themselves to discussing its disappearance from church life, and why it’s essential.