Introduction to 2 CorinthiansChapters
The second epistle to the Corinthians probably was written about a year after the first. Its contents are closely connected with those of the former epistle. The manner in which the letter St. Paul formerly wrote had been received, is particularly noticed; this was such as to fill his heart with gratitude to God, who enabled him fully to discharge his duty towards them. Many had shown marks of repentance, and amended their conduct, but others still followed their false teachers; and as the apostle delayed his visit, from his unwillingness to treat them with severity, they charged him with levity and change of conduct. Also, with pride, vain-glory, and severity, and they spake of him with contempt. In this epistle we find the same ardent affection towards the disciples at Corinth, as in the former, the same zeal for the honour of the gospel, and the same boldness in giving Christian reproof. The first six chapters are chiefly practical: the rest have more reference to the state of the Corinthian church, but they contain many rules of general application.
-- taken from Matthew Henry's Concise Commentary