13becauseὅτιa hired servantμισθωτόςhe isἐστινandκαὶnotοὐis himself concernedμέλειto himαὐτῷaboutπερὶtheτῶνsheepπροβάτων.
because he is a hired servant and is not himself caring about the sheep.
μισθωτός
a hired servant, hireling.