'Regret' in the Bible

And they all gave reasons why they were not able to come. The first said to him, I have got a new field, and it is necessary for me to go and see it: I am full of regret that I am unable to come.

And another said, I have got some cattle, and I am going to make a test of them: I am full of regret that I am unable to come.

And if he does you wrong seven times in a day, and seven times comes to you and says, I have regret for what I have done; let him have forgiveness.