Be still before the LORD and wait patiently for him; do not fret when men succeed in their ways, when they carry out their wicked schemes.

 That seems to happen a lot when there is a bad king in the bible. ( Or any bad person) You think "why doesn't God just wipe that guy off the face of the earth?"  But god says to be patient, and wait. Then you start looking for them, and they're  gone. You just have to be patient.

A little while, and the wicked will be no more; though you look for them, they will not be found.