Jesus doesn’t just use the shepherd metaphor when he refers to himself as the door. Over and over in the Bible, we are compared to sheep. Some people think it’s heartwarming. But I hate to tell you, it’s not flattering.
You won’t find a dumber animal than sheep. Dogs and cats can be trained, but you’ll never go to a circus and buy a ticket to see a trained sheep. They have poor eyesight. They have no common sense. Left to their own, they’ll walk into a stream and drown. Sheep are prone even to walk off a cliff and plummet to their death. We are different from sheep in at least one way: we worry. Sheep are too dumb even to worry that they can’t take care of themselves.