The soul witnesses the journey of those who trust in worldly riches. The path they choose is deceptive and many travel on it. Those who travel this treacherous path are like sheep heading for the pit of darkness. Here in darkness they wander in confusion aimlessly. There is none to guide them for all hope is lost.
Death is their shepherd.
This means that they have no one to guide or lead to safety. They are exposed to the wild beasts that devour them one by one. These trusted in their riches, but now there is no one to listen to their cries for help. Those who have trusted in the Lord and sought the Kingdom of God now inherit the land. They are made princes of the people.