What does the Bible say about correction in the church?

The New Testament letters, particularly those of the Apostle John, highlight the necessity of correction within the church as a means to maintain sound doctrine and encourage unity. For instance, in 3 John, John addresses the problems caused by Diotrephes and emphasizes the importance of adhering to the apostles' teachings. He makes it clear that refusing correction can lead to disunity and disorder within the church, as exemplified by Diotrephes' behavior. The church must be willing to receive correction in love, understanding it as a form of God's guidance within the body of Christ.