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? (Psalm 27:1)
Media sells to us based, in large part, on fear. Commercials sell us things by trying to convince us that we will not be able to keep up without this, or we will fall behind our neighbors without that, even something you may want or need will be sold with the threat that "this price won't last!" Fear and anxiety have effects traversing the spiritual, psychological and physical realms of life. The negative effects of fear had been seen by medical science. The world can come up with solution after solution about this, but we find the Psalmist has found a solution outside of himself.
The Psalmist fears no one and no thing because he trusts in the character and nature of God. For light, salvation and protection, David chose to look to the Lord and trust in Him. Notice that there is a resolve throughout this psalm. While David's faith is based on the facts of God's Word and built by God's faithfulness to him in the past each instance is a new opportunity to trust the Lord, and be without fear. When David was again surrounded by His enemies the choice to trust the Lord and not fear had to be made again. That trust is a forceful act of will, choosing faith over fear. Trusting that God really is who He says He is, and loves as the Bible tells us He does. There is a dogged determination to this courage that is rooted in the character of God, making the last verse of this psalm poignant and appropriate:
Wait for the LORD;
Be strong and take heart
and wait for the LORD.
Psalm 27:14