2 Corinthians 7:8-11

For though I made you sorry with my epistle, I do not regret it: though I did regret it (for I see that that epistle made you sorry, though but for a season), I now rejoice, not that ye were made sorry, but that ye were made sorry unto repentance; for ye were made sorry after a godly sort, that ye might suffer loss by us in nothing. For godly sorrow worketh repentance unto salvation, a repentance which bringeth no regret: but the sorrow of the world worketh death. For behold, this selfsame thing, that ye were made sorry after a godly sort, what earnest care it wrought in you, yea what clearing of yourselves, yea what indignation, yea what fear, yea what longing, yea what zeal, yea what avenging! In everything ye approved yourselves to be pure in the matter.