'Shepherd' in the Bible

but he that enters in by the door is the shepherd of the sheep.

I am the good shepherd. The good shepherd lays down his life for the sheep:

but he who serves for wages, and who is not the shepherd, whose own the sheep are not, sees the wolf coming, and leaves the sheep and flees; and the wolf seizes them and scatters the sheep.

I am the good shepherd; and I know those that are mine, and am known of those that are mine,

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

He says to him again a second time, Simon, son of Jonas, lovest thou me? He says to him, Yea, Lord; thou knowest that I am attached to thee. He says to him, Shepherd my sheep.