2 Corinthians 7:8-9

Goodspeed(i) 8 For even if I did hurt your feelings with that letter, I cannot regret it; even if I did regret it, when I saw that the letter had hurt your feelings perhaps for a while, 9 I am glad of it now; not because you had your feelings hurt, but because having them hurt led you to repent, for you took it as God meant you to do, so that you should not lose anything at all through me.