In the Bible, prophets, priests and kings have always been imperfect saviors of their own flock. Their leadership was always lacking, and the failures always pointed for a need of having a better savior. OT has always pointed to that One Perfect Savior i.e the Lord Jesus Christ. In this passage, we see how Christ fulfills the need for a better Savior and protector of His people.
If depression is prevalent in the world at large, it is even more so in the church. Depression is a common struggle Christians experience because of their own failure to grapple with the situation in life, and also their limitation or inability in controlling the outcomes which they never expected or wanted to avoid at all cost. In this passage, we learn the characteristics, causes, and the cure for depression, as we see David battling with it.