2 Corinthians 7:10-13

The kind of sorrow God wants makes people change their hearts and lives. This leads to salvation, and you cannot be sorry for that. But the kind of sorrow the world has brings death. See what this sorrow—the sorrow God wanted you to have—has done to you: It has made you very serious. It made you want to restore yourselves. It made you angry and afraid. It made you want to see me. It made you care. It made you want to do the right thing. In every way you have regained your innocence. I wrote that letter, not because of the one who did the wrong or because of the person who was hurt. I wrote the letter so you could see, before God, the great care you have for us. That is why we were comforted. Not only were we very comforted, we were even happier to see that Titus was so happy. All of you made him feel much better.