2 Corinthians 7:10

7:10 For sadness as intended by God produces a repentance that leads to salvation, leaving no regret, but worldly sadness brings about death.

2 Corinthians 2:1

2:1 So I made up my own mind not to pay you another painful visit.

2 Corinthians 2:7

2:7 so that now instead you should rather forgive and comfort him. This will keep him from being overwhelmed by excessive grief to the point of despair.