Psalm 27:1 has been the subject of various hymns and choruses and rightly so. It is a very good reminder of how our hearts should feel when in trouble.
“The Lord is my light and my salvation; whom shall I fear? The Lord is the stronghold of my life; of whom shall I be afraid?”
Light is a powerful symbol for almost everything good: truth, knowledge, joy, purity, etc. This “light” is linked with “salvation”. The light is the security. Every child knows how comforting it is to have a light on in the midst of a very dark room. In that sense the Lord is our eternal Night-Light. He is our great security! Lean on Him today.