Paul’s words in this text consist of a defense of himself to the church at Corinth. He protests his honesty, that “we conducted ourselves in the world in simplicity and godly sincerity.” The word “simplicity” indicates purity and integrity. Paul was not attempting to manipulate or “double deal” the Corinthians. In his dealings with that church, he always conducted himself with proper actions and motives.
Paul’s teaching was not by “fleshly wisdom”, but by the “grace of God.” As such, he treated the Corinthians justly, and could with confidence and a clean conscience proclaim that he had done what was right. A truly honest person can legitimately claim to be a friend because of the way he treats others. Motivated by love, he will always seek what is best for them. It is upon this basis that the apostle made his “boast” with regard to his relationship with the Christians in Corinth.
