2 Corinthians 7:7-10

7and not only by his arrival, but also by the comfort with which he was comforted among you, as he reported to us your longing, your mourning, your zeal for me; so that I rejoiced even more.

8For though I 1caused you sorrow by my letter, I do not regret it; though I did regret it--for I see that that letter caused you sorrow, though only for a while--

9I now rejoice, not that you were made sorrowful, but that you were made sorrowful to the point of repentance; for you were made sorrowful according to the will of God, so that you might not suffer loss in anything 2through us.

10For the sorrow that is according to the will of God produces a 3repentance 4without regret, leading to salvation, but the sorrow of the world produces death.