Jesus - The Gate
KJV - Then said Jesus unto them again, Verily, verily, I say unto you, I am the door of the sheep.
NLT - so He explained it to them:
From IVP New Testament Commentary Series via BibleGateway
In this second statement Jesus says, (v. 7)...So when Jesus says he is (v. 7) he is still using the image of a shepherd,
but applying it directly to himself.
From this picture of a shepherd sleeping in the entrance we would expect Jesus' role to be the protector of the sheep. Jesus does indeed protect his own (cf. 6:39; 17:12), but the image is developed here in a surprising way.
The sheep are to Jesus (v. 9),
something not true of the shepherd sleeping in the entrance of a summer shelter!
So the image is not that of a door as a barrier for protection, but of a door as a passageway.