The Apostle Paul
2 Corinthians 4:15ESV·traditional attribution

For it is all for your sake, so that as grace extends to more and more people it may increase thanksgiving, to the glory of God.

John Calvin Reformed @genevareformer

15. For all things are for your sakes He now associates himself with the Corinthians, not merely in the hope of future blessedness, but also in these very afflictions, in which they might seem to differ from him most widely, for he lets them know, that, if he is afflicted, it is for their benefit.

Matthew Henry Presbyterian @wholebiblehenry

In these verses the apostle gives an account of their courage and patience under all their sufferings, where observe, I. How their sufferings, and patience under them, are declared, Co2 4:8-12. The apostles were great sufferers; therein they followed their Master: Christ had told them that in the world they should have tribulation, and so they had; yet they met with wonderful support, great relief...

Commenting on 2 Corinthians 4:8-18

John Gill Reformed Baptist @doctorgill

For which cause we faint not,.... Since our afflictions are overruled for the good of others, and the glory of God, we are not discouraged by them; our spirits do not sink under the weight of them; we do not give out from the work of the ministry because of them, but go on cheerfully therein: and the more so, since though our outward man...