The Apostle Paul came to Corinth after visiting Athens and because of a Divine Revelation of Jesus Christ to him, Paul spent a year and a half teaching the Corinthians the Word of God. So to begin our study in 1st Corinthians chapter 1.
In a church, exalting their teachers rather than the Savior, the Lord Jesus Christ, the consequent problem of division in the church developed. (There is a remedy.) The Apostle Paul's remedy for this is allowing Jesus Christ back in as the head of the Body and center of attraction in Bible study, fellowship, worship and giving.