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 consecrated themselves and brought burnt sacrifices to the Lord’s temple.

16They stood at their posts according to the regulations outlined in the law of Moses, the man of God. The priests were splashing the blood as the Levites handed it to them.

17Because many in the assembly had not consecrated themselves, the Levites slaughtered the Passover lambs of all who were ceremonially unclean and could not consecrate their sacrifice to the Lord.