American Standard Version (ASV):
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),
King James Version (KJV):
For though I made you sorry with a letter, I do not repent, though I did repent: for I perceive that the same epistle hath made you sorry, though [it were] but for a season.