2 Corinthians 11:9

‘And when I was present with you and was in want, I was not a burden on any man, for the brethren, when they came from Macedonia, supplied the measure of my want, and in everything I kept myself from being burdensome to you, and so will I keep myself.'

In fact the truth was that when times of need did arise while he was with them he had still refused to be a burden to them. Rather his need was met by visitors from Macedonia who came bringing gifts. So there was no way in which he had been a burden to them. And he intends to keep it that way. He will not allow himself to be accused of preaching for reward, of preaching for any other reason than to bring the truth of Christ. This suggests that Corinth was full of preachers of all kinds, and of many religions and philosophies, whose main concern was to be paid for what they did. He did not want to appear to be like them.

The probability must be that he has taken up this position both in order to make clear that all he was concerned about was conveying the truth, and because he wanted his behaviour to act as a lesson to the Corinthians in view of their attitude towards money. He was demonstrating that money was not the most important thing in life, and that he for one was no lover of money, and he would continue to think in that way. Or alternately it may have been so as to make clear to them that he was not just a paid orator. He did not want to be just another Corinthian nine day wonder. But it proved the important difference between him and such as his opponents.