2 Corinthians 7:9

Nevertheless, he who comforts the lowly, God, comforted us by the coming of Titus,

and not by his coming only, but also by the comfort with which he was comforted in you while he told us of your longing, your mourning, and your zeal for me, so that I rejoiced still more.

For though I grieved you with my letter, I do not regret it, though I did regret it. For I see that my letter made you grieve, though just for a while.

For godly sorrow produces repentance leading to salvation, which brings no regret. But the sorrow of the world produces death.

For behold, this same thing, that you were grieved in a godly way, what earnest care it worked in you. Yes, what defense, indignation, fear, longing, zeal, and vindication! In everything you demonstrated yourselves to be pure in the matter.

So although I wrote to you, I wrote not for his cause that did the wrong, nor for his cause that suffered the wrong, but that your earnest care for us might be revealed in you in the sight of God.