"Rest in the Lord, and wait patiently for Him; do not fret because of him who prospers in his way, because of the man who brings wicked schemes to pass. Cease from anger, and forsake wrath; do not fret - it only causes harm" (Psalm 37:7-8).
The righteous person remembers to "rest in the Lord" when evil people appear to prevail. The word "rest" in verse seven means to be motionless, silent, still. This reaction in the face of wicked people and their wicked schemes does not mean we do nothing; it means we continue to rely on the Lord and look forward to His justice. We "wait patiently for Him." Otherwise, we are susceptible to burning anger that leads to more trouble. Do not turn to vitriol, violence or vengeance when evil people do wicked things. Forsake wrath, do good, and wait on the Lord. He will right every wrong in His time. Overcome evil with good (Rom. 12:19-21).