Paul defended his right to preach the gospel in Corinth and denied his critics" claim that they had been responsible for what God had done through Paul there. He did this to vindicate his former actions and to prepare for future ministry in the regions beyond Corinth. [source][source][source]
". . . Paul, responding to his opponents" characterization of him as inconsistent, and hence as a flatterer, and of the invidious comparisons of his opponents, attacks the whole convention of self-advertisement by means of a remarkably subtle and forceful parody of its methods." [1][source]
What Paul wrote in this section and the following ones helps us see that some opposition against Paul in Corinth came from Jewish Christians. These critics contested Paul"s special calling and his legitimate right to minister to Gentiles. Moreover in their unrestrained self-commendation they were claiming the credit for what God had done through Paul in Corinth. [source][source][source]