2 Chronicles 35:4-6

4Prepare yourselves according to your fathers’ houses, according to your divisions, following the written instruction of David king of Israel and the written instruction of Solomon his son.

5And stand in the holy place according to the divisions of the fathers’ houses of your brethren the lay people, and according to the division of the father’s house of the Levites.

6So slaughter the Passover offerings, consecrate yourselves, and prepare them for your brethren, that they may do according to the word of the Lord by the hand of Moses.”