“Very truly, I tell you, anyone who does not enter the sheepfold by the gate but climbs in by another way is a thief and a bandit. The one who enters by the gate is the shepherd of the sheep. The gatekeeper opens the gate for him, and the sheep hear his voice. He calls his own sheep by name and leads them out. When he has brought out all his own, he goes ahead of them, and the sheep follow him because they know his voice. They will not follow a stranger, but they will run from him because...