What does 2 Corinthians 10:14 mean?
Because his speech is not as impressive as his writing, Paul's critics among the Corinthians have suggested that believers need not worry what Paul may say or do when he arrives. False teachers point to themselves and other polished presenters as more qualified than Paul; such orators are much more successful according to the tastes of the surrounding culture.Paul has answered that he refused to even participate in the competition they are describing (2 Corinthians 10:13). That pointless exercise involves people comparing themselves to each other, to figure out who is best. Paul does not need to play that game. God has already given him a completely different mission: to reach the Corinthians with the gospel of Christ.
Now Paul adds that he has already succeeded in what God gave him to do. He reached the Corinthians with the good news of salvation through faith in Christ. He does not need to "overextend" himself to try to be successful according to some worldly standard. In other words, he doesn't need to compete. He doesn't need to be the most impressive speaker, nor make the most entertaining arguments in order to win them away from other teachers. He already reached them, and they had already believed. Why would he go back and try to outperform his opponents to get the Corinthians to believe in Christ if they already believed?