John 10:1

Ἀμὴν … λῃστής. The αὐλή, or sheepfold, into which the sheep were gathered for safety every night, is described as being very similar to folds in some parts of our own country; a walled, unroofed enclosure. The θύρα, however, is not as with us a hurdle or gate, but a solid door heavily barred and capable of resisting attack. This door is watched by a θυρωρός [door-guard, for root “or” vide Spratt's Thucyd., iii. p. 132], who in the morning opened to the shepherd. He who does not appeal to the θυρωρός but climbs up over the wall by some other way (lit. from some other direction: ἀλλαχόθεν, which is used in later Greek for the Attic ἄλλοθεν) is κλέπτης καὶ λῃστής, a “thief” who uses fraud and a “robber” who is prepared to use violence. That is to say, his method of entrance, being illegitimate, declares that he has no right to the sheep.