Ezekiel 44:23-24

The Prince, Levites, and Priests

²³They will teach my people the difference between what is holy and what is common, what is ceremonially clean and unclean.

²⁴“They will serve as judges to resolve any disagreements among my people. Their decisions must be based on my regulations. And the priests themselves must obey my instructions and decrees at all the sacred festivals, and see to it that the Sabbaths are set apart as holy days.