Psalm 54

There can be no question that this psalm was written by someone who had experienced the work of God's providence before. In verse 7 he attributes God with previous rescues. He understood that his enemies were defeated because of God's handiwork. So shall all of our enemies meet their end. Because of God's past work in his life the psalm writer knows exactly what he needs to do; he sets his petition before God. Then he awaits God's deliverance.
Stuart