The book of 2nd Corinthians is a Pauline Epistle (letter from Paul). The Apostle Paul wrote it about 56 A.D. The key personalities of this book are the Apostle Paul, Timothy, and Titus. Paul wrote this letter to the church in Corinth to defend and protect his Apostleship and to teach and warn against false teachers who were spreading heresy.

• In chapters 1-7, Paul describes the characteristics of an Apostle. He explained that his ministry was to preach Jesus Christ alone and not himself, “For we do not preach ourselves, but Christ Jesus as Lord, and ourselves as bondservants for Jesus’ sake” (4:5).
• In chapters 8-9, He urges the Corinthians to give the offering to the believers in Judea, as they had promised. He taught that if they gave generously they would also “reap generously” (9:6).
• Chapters 10-13 Paul defends his ministry and responds to attacks about his Apostleship. They had been questioning his authority and opposing him. Paul declares that if anyone preaches a different Gospel or a different Jesus, other than what Paul and the Apostles were preaching, they are false teachers and deceitful workers and should not be accepted.

  The last thing Apostle Paul teaches in 2nd Corinthians is how to test yourself. If you want to know if you are a Christian, if you want to know if you are a believer and follower of Jesus Christ, than you must test yourself, “to see if you are in the faith”; examine yourself with Scripture (13:5).