The Apostle Paul
2 Corinthians 2:9ESV·traditional attribution

For this is why I wrote, that I might test you and know whether you are obedient in everything.

John Calvin Reformed @genevareformer

9. For I had written to you also for this purpose. He anticipates an objection, that they might bring forward. “What then did you mean, when you were so very indignant, because we had not inflicted punishment upon him? From being so stern a judge, to become all at once a defender — is not this indicative of a man, that wavers between conflicting dispositions?”...

Matthew Henry Presbyterian @wholebiblehenry

In these verses the apostle treats concerning the incestuous person who had been excommunicated, which seems to be one principal cause of his writing this epistle. Here observe, 1. He tells them that the crime of that person had grieved him in part; and that he was grieved also with a part of them, who, notwithstanding this scandal had been found among them, were puffed...

Commenting on 2 Corinthians 2:5-11

John Gill Reformed Baptist @doctorgill

For to this end also did I write,.... Or "I have written", both in this and in his former epistle to them, and in both with this view, that I might know the proof of you; that he might try, prove, and know them: whether ye be obedient in all things; he wrote unto them in his former epistle, to put away that wicked man...