2 Corinthians 7:9-10

yet I am glad now, not because you were hurt and made sorry, but because your sorrow led to repentance [and you turned back to God]; for you felt a grief such as God meant you to feel, so that you might not suffer loss in anything on our account. For [godly] sorrow that is in accord with the will of God produces a repentance without regret, leading to salvation; but worldly sorrow [the hopeless sorrow of those who do not believe] produces death.