2 Chronicles 29:34

34But the priests were too few and could not flay all the burnt offerings, so until other priests had consecrated themselves, atheir brothers the Levites helped them, until the work was finishedbfor the Levites were more upright in heart than the priests in consecrating themselves.

2 Chronicles 35:3-6

3And he said to the Levites cwho taught all Israel and who were holy to the Lord, “Put the holy ark in the house that Solomon the son of David, king of Israel, built. You need not carry it on your shoulders. Now serve the Lord your God and his people Israel. 4Prepare yourselves daccording to your fathershouses by your divisions, eas prescribed in the writing of David king of Israel fand the document of Solomon his son. 5And gstand in the Holy Place haccording to the groupings of the fathershouses of your brothers the lay people, and according to the division of the Levites by fathershousehold. 6And slaughter the Passover lamb, and iconsecrate yourselves, and prepare for your brothers, to do according to the word of the Lord by Moses.”

Copyright information for ESV