The sheep follow because they know the shepherd's voice. Butcher drives the sheep. Hobab gave good advice for he had experience in the wilderness. Picture of Jesus in whom rests the unbroken law. Sheep chew the cud, clean animal, proper diet, parts hoof, steady walk .
Ruminant means to chew the cud.
The shepherd delights to have the sheep lying down. Putting on fat. He does for us spiritually all that water does for us physically 1. Is a vital necessity. Still water runs deep.