Believers may, like those of Corinth, make serious mistakes and need to repent and reform.  Here the apostle chronicles the Corinthian readiness to change, highlighting seven distinct components of a believer's repentance, so that restoration to full blessing and fruitfulness may be experienced.

Fellowship with false teachers nearly ruined the Corinthian church, leading to this passage on the utter incompatibility of believers being united with unbelievers (as churches or as individuals entering into marriage).  Here are God's reasons, and the command to stand apart from apostate churches or denominations.

With further inspired insights into the Gospel era the prophet describes an entirely new order in which the church will proclaim Christ and His accomplished salvation, sing a new hymnody extending the book of Psalms, and labour as the church militant in evangelism.

Here are our three greatest mistakes about God that keep us from seeking Him, and here also are the three charges that God will bring against us if we ignore Him in our lives.  Best of all, here is God's way of forgiveness and real life.

The apostle gives inspired and essential conditions for instrumentality in Gospel work.  Beginning with a strong plea to avoid fruitlessness, he stresses the necessity of a consistent life, resilience through all hardship, and five positive qualities which must be exhibited, by the Spirit's help.