Paul again challenges the church in Corinth to clean up their act before he gets there. God is so gracious, He gives us His Word to teach us, to help us "clean up our act." And when we don't listen, He often sends us a "Paul" to encourage us some more!
Even though he gives them some strong words I love how he ends the letter:
11 Dear brothers and sisters, I close my letter with these last words: Be joyful. Grow to maturity. Encourage each other. Live in harmony and peace. Then the God of love and peace will be with you.12 Greet each other with Christian love. 13 All of God’s people here send you their greetings.
14 May the grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit be with you all.