2 Corinthians 7:9-10
Context7:9 Now I rejoice, not because you were made sad, 1 but because you were made sad to the point of repentance. For you were made sad as God intended, 2 so that you were not harmed 3 in any way by us. 7:10 For sadness as intended by God produces a repentance that leads to salvation, leaving no regret, but worldly sadness brings about death.