Several of the psalms in the Bible begin with this phrase, “The LORD reigns”. Many of these psalms were composed during personally or nationally challenging times. The psalmist and the people needed the reminder that the one true and living God is in complete control of the world He created.
The deceitful and destructive nature of sin wreaks havoc on the earth. When people, tainted by sin, live in expression of our fallen nature great suffering and sorrow follow.