Paul explains that he decided not to come again in sorrow. If he grieves them, who is there to make him glad but the one whom he grieved? He wrote them a letter out of much affliction and anguish of heart and with many tears, not to grieve them but to let them know the abundant love he has for them.
If anyone has caused grief, he has not grieved Paul so much as, in some measure, all of them. For such a person the punishment by the majority is enough. Now they should rather forgive and comfort him, so that he may not be overwhelmed by excessive sorrow, and Paul urges them to reaffirm their love for him. He also wrote to test them and see whether they were obedient in everything. Anyone they forgive, Paul forgives, and does so in the presence of Christ, so that Satan will not gain an advantage over them, for they are not ignorant of his designs.
Paul tells how he came to Troas to preach the gospel of Christ and a door was opened for him in the Lord, but his spirit was not at rest because he did not find his brother Titus, so he said farewell and went on to Macedonia.
Then he bursts into thanksgiving: thanks be to God, who in Christ always leads us in triumphal procession and through us spreads the fragrance of the knowledge of him everywhere. We are the aroma of Christ to God among those who are being saved and those who are perishing: to one a fragrance from death to death, to the other a fragrance from life to life. Paul asks who is sufficient for these things, and answers that they are not like so many who peddle God's word, but speak with sincerity, as commissioned by God and in the sight of God, in Christ.