John Chrysostom
Thus He indicated the marks both of the shepherd and of the robber. Let us now see how He applied what follows to them.
"To him," He says, "the doorkeeper opens." He continues to speak figuratively, for greater expressiveness.
"And the sheep hear his voice, and he calls his own sheep by name."
Since the Jews often called Him a deceiver and proved it by their own unbelief, saying, "Have any of the rulers believed in Him?" (Jn 7:48), He shows that He should not be called a destroyer and deceiver because of their unbelief.
Rather, they should be so called, because they do not listen to Him and therefore are naturally excluded from the number of the sheep.
If it belongs to the shepherd to enter by the lawful door, and He entered by this very door, then all who followed Him can be sheep.
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Those who withdrew from Him do not dishonor the shepherd, but cut themselves off from the flock of sheep.
As for the fact that afterward He calls Himself the door, one should not be disturbed by this.
He calls Himself both Shepherd and Sheep, indicating different aspects of His ministry.
When He brings us to the Father, He calls Himself the door. When He expresses His care for us, He calls Himself the shepherd.
So that you may not think that His work consists only in bringing us to the Father, He also calls Himself the shepherd.
In the same way, when He sent the sheep, He sent them not away from wolves, but into the midst of wolves.
This shepherding is far more wondrous than what exists among us.
It seems to me that there is also an allusion here to the blind man. He called him too and led him out from the midst of the Jews, and he heard and knew His voice.
If you wish to examine each word in the parable, nothing prevents understanding Moses here by the doorkeeper, because the words of God were entrusted to him.