Paul corrects two things, both of them regarding their worship services. The issue of headship, and the issue of the Lord's supper.

Paul continues to rebuke and exhort to live with your liberties in a way that builds others up.

Gospel workers have a right to get paid for their efforts. Paul is an example of someone who refused this right so he could win more.

Paul teaches that knowledge without love "puffs up"

Paul teaches about marriage, singleness, divorce, and sex.

No more lawsuits against fellow believers. Paul likens it to sexual immorality.

Paul corrects overt sin that is threatening the purity of the church.

How the church should think about their leaders

Strive for Unity in the local church

Paul graciously greets a church that needs a lot of correction. He begins with the topic of unity.