2 Chronicles 35:2-6

2He appointed the priests to their positions and encouraged them in the service of the house of the Lord.

3To the Levites who taught all Israel and were holy to the Lord he said, “Put the holy ark in the house (temple) which Solomon the son of David king of Israel built; it shall not be a burden [carried] on your shoulders any longer. Now serve the Lord your God and His people Israel.

4Prepare yourselves according to your fathers’ (ancestors’) households by your divisions, in accordance with the instructions of David king of Israel, and the instructions of his son Solomon.

5And stand in the holy place [of the priests] according to the sections of the fathers’ households of your fellow kinsmen the lay people, and according to the Levites, by division of [the families of] a father’s household.

6Slaughter the Passover lambs and consecrate yourselves, and prepare for your fellow countrymen to carry out (obey) the word of the Lord given by Moses.”