This is a Psalm of praise to the LORD who provides, protects, and delivers. From the beginning we are invited to praise; and we are told how. Praise with instruments and singing (music). Sing new songs. Play skillfully. Make it loud!
We are also told why. His Word is true and we can trust everything He does. He created and He controls the world by His Word. His Word is greater than the words of the most powerful leaders and nations of the world. He sees everything and watches over those who fear Him. He will provide, protect, and deliver.