Great praise by David from a place of great victory. In previous Psalms David cried out to God from times of intense crisis,now he cries out to God with the same strength to praise Him for His deliverance. Sad to say that many are far more passionate in asking for help than they ever are in giving thanks or praise. "To be saved singing is to be saved indeed. Many are saved mourning and doubting,but David had such faith that he could fight singing,and with the battle with a song on his lips." (Spurgeon) In midst of his trial David had many reasons and occassions yo wonder where the delivering hand of God was.God's deliverance is always seen most clearly looking back,looking forward it is often only seen by faith. Be encouraged also as was David in his intuition or faith that deliverance and total and complete breakthrough was at hand.