John 10:3-9

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.

7Jesus therefore said unto them again, Verily, verily, I say unto you, I am the door of the sheep. 8All that came before me are thieves and robbers: but the sheep did not hear them. 9I am the door; by me if any man enter in, he shall be saved, and shall go in and go out, and shall find pasture.