“Verily, verily, I say unto you, He that enters not by the door into the fold of the sheep, but climbs up some other way, the same is a thief and a robber. But he that enters in by the door is the shepherd of the sheep. To him the porter opens; and the sheep hear his voice: and he calls his own sheep by name, and leads them out. When he has put forth all his own, he goes before them, and the sheep follow him: for they know his voice. And a stranger will they not follow, but will flee from him: for they know not the voice of strangers.”