The Apostle Paul
2 Corinthians 11:12BSB·traditional attribution

But I will keep on doing what I am doing, in order to undercut those who want an opportunity to be regarded as our equals in the things of which they boast.

John Calvin Reformed @genevareformer

12. But what I do. He again explains the reason of his intention. “C’estoit vne fausse monstre de quelque zele excellent, de seruir sans rien prendre;” — “It was a false show of eminent zeal, to serve without taking any thing.” The false Apostles, with the view of alluring to themselves ignorant persons, took no pay. Their serving gratuitously was a show of uncommon zeal.

Matthew Henry Presbyterian @wholebiblehenry

After the foregoing preface to what he was about to say, the apostle in these verses mentions, I. His equality with the other apostles - that he was not a whit behind the very chief of the apostles, Co2 11:5. This he expresses very modestly: I suppose so. He might have spoken very positively.

Commenting on 2 Corinthians 11:5-15

John Gill Reformed Baptist @doctorgill

But what I do, that I will do,.... As he preached the Gospel freely at Corinth and in Achaia, so he was determined to do it for the future, for this reason only, or chiefly: that, says he, I may cut off occasion from them which desire occasion: meaning the false apostles, who sought for, and were desirous of every occasion and opportunity of exalting...