2 Corinthians 7:8-9; 2 Corinthians 7:12-13
For even if I made you sorry with my letter, I do not regret it (though I did regret it), for I see that that letter grieved you, though only for a while.
As it is, I rejoice, not because you were grieved, but because you were grieved into repenting; for you felt a godly grief, so that you suffered no loss through us.
So although I wrote to you, it was not on account of the one who did the wrong, nor on account of the one who suffered the wrong, but in order that your zeal for us might be revealed to you in the sight of God.
Therefore we are comforted. And besides our own comfort we rejoiced still more at the joy of Titus, because his mind has been set at rest by you all.