'Regret' in the Bible

So the Lord said, "I will wipe humankind, whom I have created, from the face of the earth -- everything from humankind to animals, including creatures that move on the ground and birds of the air, for I regret that I have made them."

"I regret that I have made Saul king, for he has turned away from me and has not done what I told him to do." Samuel became angry and he cried out to the Lord all that night.

I said, "Oh, mother, how I regret that you ever gave birth to me! I am always starting arguments and quarrels with the people of this land. I have not lent money to anyone and I have not borrowed from anyone. Yet all of these people are treating me with contempt."

For even if I made you sad by my letter, I do not regret having written it (even though I did regret it, for I see that my letter made you sad, though only for a short time).

For sadness as intended by God produces a repentance that leads to salvation, leaving no regret, but worldly sadness brings about death.