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

And what I am doing I will continue to do, in order to undermine the claim of those who would like to claim that in their boasted mission they work on the same terms as we do.

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...