John Wesley on 1 Chronicles 26:29

Judges - Judges over the people, in the several cities and towns, to determine questions and controversies which might arise among them. And the reason why the Levites were intrusted with these matters was, because the common law of Israel, by which they had and held all their rights was no other than the law of God, whereof the priests and Levites being the established interpreters, must needs be the most proper judges of things depending thereon.