Here is an eye-opening pair of readings! The Epistle (attributed St Peter) refers to Jesus as Shepherd and Bishop. Since all apostolic lineage traces to St Peter, that says something because St Peter would be the most likely mortal to be referred to as shepherd and Bishop.
Then the Gospel tells of the difference between a shepherd and the hireling who might watch sheep when the shepherd can’t. And then, also, the statement that he has sheep not of that fold, and they know his voice. And there are all kinds of implications there.
A good time to re-examine what we think we know!