Jeremiah 18:7-10

7 At what instant I shall speak concerning a nation, and concerning a kingdom, to pluck up and to break down and to destroy it;  8 if that nation, concerning which I have spoken, turn from their evil, I will repent of the evil that I thought to do to them.  9 At what instant I shall speak concerning a nation, and concerning a kingdom, to build and to plant it;  10 if they do that which is evil in my sight, that they not obey my voice, then I will repent of the good, with which I said I would benefit them.