2 Corinthians 7:8-10

8For even if I grieved you with my letter, I don’t regret it. And if I regretted it — since I saw that the letter grieved you, yet only for a while —

9I now rejoice, not because you were grieved, but because your grief led to repentance. For you were grieved as God willed, so that you didn’t experience any loss from us.

10For godly grief produces a repentance that leads to salvation without regret, but worldly grief produces death.