John 10:1-6

1Verily, verily, I say unto you, He that entereth not by the door into the fold of the sheep, but climbeth up some other way, the same is a thief and a robber. 2But he that entereth in by the door is the shepherd of the sheep. 3To him the porter openeth; and the sheep hear his voice: and he calleth his own sheep by name, and leadeth them out. 4When he hath put forth all his own, he goeth before them, and the sheep follow him: for they know his voice. 5And a stranger will they not follow, but will flee from him: for they know not the voice of strangers. 6This parable spake Jesus unto them: but they understood not what things they were which he spake unto them.