John Chrysostom

"And when I was present with you, and was in want, I was not a burden on any man." For he did not say, "ye did not give to me," but, "I did not take," for as yet he spares them. But nevertheless even in the subduedness of his language he covertly strikes them again, for the word, "present," is exceedingly emphatic, and so is "in want." For that they might not say, "what matter then, if you had [enough]?" he added, "and was in want." "I was not a burden" on you. …

Homily 23 on 2 Corinthians ↗

Theophylact of Ohrid

A threefold accusation: first, that while being with you and serving you, suffering need, I did not gain your respect, for you not only did not send me anything, as the Macedonians did, but even when I was with you, you did not support me. The expression "I was not a burden to anyone" means: I was not burdensome to anyone. By this he shows that they help hesitantly and feebly. …

Commentary on 2 Corinthians ↗

Thomas Aquinas

Having shown that when he first preached to them during his first visit, he preached to them without charge, he now shows that not even during his long stay among them did he accept any payments from them. First, he shows this; secondly, he answers a tacit question (v. 9b). …

Commentary on 2 Corinthians ↗