Reformation Seminary Lecture - John 10 - Part 1,

KJV John 10

10 Verily, verily, I say unto you, He that entereth not by the door into the sheepfold, but climbeth up some other way, the same is a thief [klepto] and a robber. [The door is an opening. The porter -  blocks the entryway.]

Thayer - 

1. among the Greeks in Homer's time, an uncovered space around the house, enclosed by a wall, in which the stables stood, hence among the Orientals that roofless enclosure by a wall, in the open country in which the flocks were herded at night, a sheepfold

2 But he that entereth in by the door is the shepherd of the sheep.

500 references to sheep and shepherding in the Bible. Psalm 23; Isaiah 40.

3 To him the porter openeth; and the sheep hear his voice: and he calleth his own sheep by name, and leadeth them out.

"Every soul has a name." Well known Concordia St. Louis professor.

4 And when he putteth forth his own sheep, he goeth before them, and the sheep follow him: for they know his voice.

5 And a stranger will they not follow, but will flee from him: for they know not the voice of strangers.

6 This parable spake Jesus unto them: but they understood not what things they were which he spake unto them.

7 Then said Jesus unto them again, Verily, verily, I say unto you, I am the door of the sheep.

8 All that ever came before me are thieves and robbers: but the sheep did not hear them.

9 I am the door: by me if any man enter in, he shall be saved, and shall go in and out, and find pasture.

10 The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.