Verily, verily, I say unto you, He that enters not by the door into the sheepfold, but climbs up some other way, the same is a thief and a robber.
All Commentaries on John 10:1 Go To John 10
Glossa Ordinaria
AD 1480
And when He puts forth His own sheep, He goes before them, He leads them out from the darkness of ignorance into light, while He goes before in the pillar of cloud, and fire.