Tractates on the Gospel of John

¹ The Lord Jesus is speaking to His sheep— to those already so, and to those yet to become such— who were then present; for in the place where they were, there were those who were already His sheep, as well as those who were afterwards to become so: and He likewise shows to those then present and those to come, both to them and to us, and to as many also after us as shall yet be His sheep, who it is that had been sent to them. All, therefore, hear the voice of their Shepherd saying, “I am the good Shepherd.”

He would not add “good,” were there not bad shepherds. But the bad shepherds are those who are thieves and robbers, or certainly hirelings at the best. For we ought to examine into, to distinguish, and to know, all the characters whom He has here depicted. The Lord has already unfolded two points, which He had previously set forth in a kind of covert form: we already know that He is Himself the door, and we know that He is Himself the Shepherd. Who the thieves and robbers are, was made clear in yesterday's lesson; and today we have heard of the hireling, as we have heard also of the wolf. Yesterday the porter was also introduced by name. Among the good, therefore, are the door, the doorkeeper, the shepherd, and the sheep: among the bad, the thieves and robbers, the hirelings, and the wolf.