2 Chronicles 29:5

5and said to them, “Hear me, Levites! Now aconsecrate yourselves, and consecrate the house of the Lord, the God of your fathers, and carry out the filth from the Holy Place.

2 Chronicles 30:16-17

16 bThey took their accustomed posts according to the Law of Moses cthe man of God. The priests threw the blood that they received from the hand of the Levites. 17For there were many in the assembly who had not consecrated themselves. Therefore the Levites had to slaughter the Passover lamb for everyone who was not clean, to consecrate it to the Lord.
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