This psalm directly follows the angst in Psalm 22. Given that as a context, it is likely that Jesus would’ve been thinking about this Psalm upon the cross. It is a supreme statement of faith, and as such, has been used by countless Christians to give them hope in desperate times. In fact, this passage is often used in spiritual warfare for that very reason. We ought to note that the psalm relies heavily on the metaphor of God as a shepherd. This was a personal metaphor for David, as it was his early profession. It is clear that he learned from that job how he ought to care for people, and though he dramatically failed at it from time to time, he took the ideal things away and applied them to God. There is a profound sense of security and intent in the metaphor. This is the nature of David’s sense of peace. He knows that God is doing all things for his benefit and because of this, he knows he has nothing to worry about. This includes being led into a place filled with evil intent and malice. For a world that believes that every interaction must lack the possibility of harm, this is a stark reminder of who God is. He is the good shepherd. We are safe because he is good and because he is a shepherd. Not because the situation is safe.