In this Psalm we find David hold up in a cave after fleeing for his life from Saul. The prison he writes about here isn’t just the dark, dank hiding place he’s in, but the prison of his soul caused by stress, anxiety, exhaustion, & hopelessness. And so he cries out to God to set him free from his emotional suffering… in order that he might regain God’s vision & standpoint. God is our refuge when we find ourselves in that emotional prison…for anxiety & fear cannot stop death…they only stop life, and worrying & stressing will never take away tomorrow’s trouble…they only take away today’s peace. God is the only One that can set us free from our emotional prison.