2 Corinthians 7:6-7

7:6 But God, who encourages the downhearted, encouraged us by the arrival of Titus. 7:7 We were encouraged not only by his arrival, but also by the encouragement you gave him, as he reported to us your longing, your mourning, your deep concern for me, so that I rejoiced more than ever.

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.