'Regret' in the Bible

For even if I grieved you with my letter, I do not regret it—even though I did regret it since I saw that the letter grieved you, yet only for a little while.

For the sorrow that is according to the will of God produces a repentance without regret, leading to salvation, but the sorrow of the world produces death.

Each person should do as he has decided in his heart—not reluctantly or out of necessity, for God loves a cheerful giver.

And that when I come again, my God may put me to shame among you, and I may have grief for those who have done wrong before and have had no regret for their unclean ways, and for the evil desires of the flesh to which they have given way.