2 Corinthians 7:5-12

In fact, when we came into Macedonia,  we  had no rest. Instead, we were troubled in every way: conflicts  on the outside, fears  within. But God, who comforts the downcast,  comforted us by the arrival of Titus, and not only by his arrival but also by the comfort he received from you. He told us about your deep longing, your sorrow, and your zeal  for me, so that I rejoiced even more. For even if I grieved you with my letter,  I don’t regret it. And if I regretted it — since I saw that the letter grieved you, yet only for a while —  I now rejoice, not because you were grieved, but because your grief led to repentance. For you were grieved as God willed, so that you didn’t experience any loss from us. For godly grief produces a repentance that leads to salvation without regret, but worldly grief produces death.  For consider how much diligence this very thing — this grieving as God wills — has produced in you: what a desire to clear yourselves, what indignation, what fear, what deep longing, what zeal, what justice! In every way you showed yourselves to be pure  in this matter. So even though I wrote to you, it was not because of the one who did wrong, or because of the one who was wronged, but in order that your devotion to us might be made plain to you in the sight of God.