The thieves and robbers mentioned here are primarily the Pharisees who have unjustly excommunicated the blind man, and secondarily and prophetically false pastors in the Christian Church. Christ is the rightful owner of the flock, and those who would exercise the office of shepherd must 'enter by the door,' i.e. receive their authority from Him, and exercise it in His spirit. This the Pharisees have not done. 2. To understand the imagery, it must be remembered that Eastern folds are large open enclosures into which several flocks are driven at the approach of night. There is only one door, which a single shepherd guards, while the others go home to rest. In the morning the shepherds return, are recognised by the doorkeeper, call their flocks round them, and lead them forth to pasture.
Related Commentaries of John 10:1
John 10:1
1 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 and a robber.