Christian slogans can be helpful but can also lack a theological fullness leading to confusion.  The Corinthians' slogan "all things are lawful for me" led to confusion concerning their freedom in Christ mistaken for a license to sin.  

The grievances within the church at Corinth dishonored the name of the Lord.  It was much bigger than just lawsuits and grievances; these revealed a failure to living in light of the gospel of Jesus Christ.  

500th Anniversary of the Reformation - this still matters!

Paul addresses the arrogance of the Church at Corinth and admonishes the church to remove a sexually immoral man for the sake of the man himself, for the sake of the church, and ultimately, for the sake of Christ.

As their spiritual father in the faith, Paul calls a "family meeting" for the church in Corinth.  

Paul rebukes the Corinthian church for attempting to adopt worldly wisdom in building the church.  God's work is to be done in and by God's wisdom.  The means given for the building of the church is the faithful proclamation of the Gospel of Jesus Christ.  

In the eyes of the world, this is a really foolish sermon!

Paul moves from reminding the church in Corinth in whom they stand and all the gifts and graces they've been given to now calling them to live in a manner in accord with whose they are.