Ezekiel 44:23-24

NHEB(i) 23 They shall teach my people the difference between the holy and the common, and cause them to discern between the unclean and the clean. 24 "'In a controversy they shall stand to judge; according to my ordinances shall they judge it: and they shall keep my laws and my statutes in all my appointed feasts; and they shall make my Sabbaths holy.