The Book of 1 Corinthians is a collection of letters written by Paul to the Corinthians around 56 A.D. The underlying theme of these letters was for Paul to address and correct issues of immorality and divisions among members of the church in that area.
In Chapters 1-4: Paul receives reports of “…contentions among you [the Corinthians].” (1 Corinthians 1:11) Paul asks believers to “…see your calling…how that not many…are called.” (1 Corinthians 1:26) Paul explains that God has chosen them, and because of that they need to behave like they have been chosen and become believers in God and in Jesus Christ and let God have a hand in our daily lives.
In chapters 5-11: Paul exposes all of the unrighteous activities of immorality that was occurring among the Corinthians at Corinth. Their sins included: sexual immorality, issues of marriage, and lawsuits within the church. “Know ye not that the unrighteous shall not inherit the kingdom of God?” (1 Corinthians 6:9)
In chapters 12-14: Paul helps clear up any confusion about the different practices of worship in the Church of Jesus Christ. He helps to correct difficult doctrines that had caused divisions and again more confusion! Paul explains to the Corinthians that “…God is not the author of confusion, but of peace…” (1 Corinthians 14:33) Essentially he is saying that there is no need for people to fight over doctrines, when God only authored one Doctrine, and never meant for it to be confusing.
In Chapters 15-16: Paul explains the topic of the Resurrection of Jesus Christ and explains that if He rose on the third day, then WE too can rise once again after death.