The Apostle Paul
2 Corinthians 10:12ESV·traditional attribution

Not that we dare to classify or compare ourselves with some of those who are commending themselves. But when they measure themselves by one another and compare themselves with one another, they are without understanding.

John Calvin Reformed @genevareformer

12. For we dare not. He says this by way of irony, for afterwards he does not merely compare himself boldly with them, but, deriding their vanity, he leaves them far behind him. Now by this irony he gives a stroke, not merely to those foolish boasters, Thrasones. — See vol. 1, p. 98, n. 1.

Matthew Henry Presbyterian @wholebiblehenry

In these verses observe, I. The apostle refuses to justify himself, or to act by such rules as the false apostles did, Co2 10:12. He plainly intimates that they took a wrong method to commend themselves, in measuring themselves by themselves, and comparing themselves among themselves, which was not wise.

Commenting on 2 Corinthians 10:12-18

John Gill Reformed Baptist @doctorgill

For we stretch not ourselves beyond our measure,.... They did not go beyond the bounds set them by the purpose and providence of God, by going to Corinth; nor did they boast of things without their measure, when they spoke of their labours, and of the success of their ministrations among them; nor did they assume and arrogate to themselves what did not belong to...