In this third and last major division of his epistle the apostle Paul defended his apostolic authority. He did this to silence his critics in Corinth and perhaps elsewhere permanently and to confirm the united support of the Christians there. One of Paul"s major purposes in writing this letter was to prepare the way for his next visit. He had just referred to that "anticipated visit" ( 2 Corinthians 9:3-4). Consequently he felt compelled to establish his apostolic authority firmly. [source][source][source]
". . . the reason for the new subject (as in 1 Corinthians 7:1; 1 Corinthians 12:1; 1 Corinthians 15:1) lies primarily in the situation [1] rather than in Paul"s logic." [2][source]
Broomall"s observation on the tone of2Corinthians generally is especially true of chapters10-13. [source][source][source]
"The progress of thought in this epistle is like the movement of a mighty army advancing over rugged terrain still inhabited by pockets of stubborn resistance." [3][source]
". . . 2 Corinthians 10-13presents us with what might almost be called a new kind of Judaizing: a Hellenistic Jewish movement that opposed Paul but was less concerned (so far as we know) with circumcision and with detailed observance of the Mosaic law than with prestige and power in accord with the contemporary values of Corinthian society. Paul"s response ( 2 Corinthians 10-13) is the most intense, revealing, and emotional of all his writings." [4][source]