2 Chronicles 30:15-17

15They slaughtered the Passover lamb on the fourteenth day of the second month. The priests and Levites were ashamed, so they performed the ceremonies to make themselves holy. Then they brought burnt offerings to the Lord’s temple.

16They stood in their regular places as instructed by Moses’ Teachings. (Moses was a man of God.) The priests sprinkled the blood they received from the Levites.

17Many people in the assembly had not made themselves holy. So the Levites had to kill the Passover lambs for all who weren’t clean  and couldn’t make their lambs holy for the Lord.