'Shepherd' in the Bible

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

I am the good shepherd: the good shepherd giveth his life for the sheep.

But he that is an hireling, and not the shepherd, whose own the sheep are not, seeth the wolf coming, and leaveth the sheep, and fleeth: and the wolf catcheth them, and scattereth the sheep.

I am the good shepherd, and know my sheep, and am known of mine.

And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.