“for sorrow toward God works conversion to salvation without regret, and the sorrow of the world works death,”— 2 Corinthians 7:10 (LSV)
7and not only in his coming, but also in the comfort with which he was comforted over you, declaring to us your longing desire, your lamentation, your zeal for me, so that I rejoiced the more,
8because even if I made you sorry in the letter, I do not regret—if even I regretted—for I perceive that the letter, even if for an hour, made you sorry.
9I now rejoice, not that you were made sorry, but that you were made sorry to conversion, for you were made sorry toward God, that you might receive damage from us in nothing;
10for sorrow toward God works conversion to salvation without regret, and the sorrow of the world works death,
11for behold, this same thing—your being made sorry toward God—how much diligence it works in you! But defense, but displeasure, but fear, but longing desire, but zeal, but revenge; in everything you approved yourselves to be pure in the matter.
12If, then, I also wrote to you—not for his cause who did wrong, nor for his cause who suffered wrong, but for our diligence in your behalf being revealed to you before God—
13because of this we have been comforted in your comfort, and more abundantly the more we rejoiced in the joy of Titus, that his spirit has been refreshed from you all;