In Chapter 10, Paul discusses the spiritual nature of the war that Christians are engaged in, emphasizing that the weapons are not worldly but have divine power to demolish strongholds. He defends his authority and the boldness of his letters, countering those who challenge his credentials and dispute his apostolic authority.

Paul continues to defend his apostleship, expressing his divine jealousy for the Corinthians and his fear that they are being led astray from a sincere and pure devotion to Christ. He speaks of false apostles who disguise themselves as apostles of Christ and warns of their deception. Paul then reluctantly boasts about his sufferings and experiences as a servant of Christ to underline his dedication and authority.

Chapter 12 further details Paul’s experiences, including his vision of paradise and his “thorn in the flesh,” which serves to keep him humble and reliant on God’s grace. He emphasizes the sufficiency of God’s grace and the power of Christ in weakness. Paul expresses his concern for the Corinthians’ faith, fearing that he may not find them as he wants them to be.

Chapter 13 concludes with Paul urging the Corinthians to examine themselves to see whether they are in the faith and to strive for restoration, warning that he will not spare those who sinned earlier when he comes again. He prays for their restoration and ends with a benediction of love and peace, encouraging mutual greeting and the grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit being with them all.