Sheep Without a Shepherd

I got struck by the last phrase of the gospel today, “He had compassion over them, because they were like sheep without a shepherd.” What does this mean, to be sheep without a shepherd? It would probably mean being lost—the shepherd gives direction; he leads the sheep to wherever there is grass or wherever it is most safe. It probably means going around in circles— not knowing where to go, just letting your hunger take you to wherever there is food to eat, grass to graze. It would also mean being in constant danger. Being vulnerable to the elements— rain, fire, wind, wild animals, wolves.