The reformed or Presbyterian tradition is most closely identified with the Swiss reformer, John Calvin. Minister and lay people alike were called elders. But they were unlike in that their respective responsibilities were never blurred. Let's jump ahead 100 years, from the 1500s to the 1600s. The judges in ancient Israel were not like judges of our day.
Modern judges are courtroom referees who preside over trials only.
Ancient judges were chiefly leaders and rulers. Jesus ever remains the Good Shepherd. Nevertheless, under Jesus the good shepherd pastors are shepherds. Under God the saviour judges were recognized as saviours or deliverers. In the older testament elders are associated with Moses as well.