2 Chronicles 29:15
And they gathered their brothers, and sanctified themselves, and went in, according to the commandment of the king by the words of LORD, to cleanse the house of LORD.
2 Chronicles 30:12
Also the hand of God came upon Judah to give them one heart, to do the commandment of the king and of the rulers by the word of LORD.
1 Chronicles 23:28
For their office was to wait on the sons of Aaron for the service of the house of LORD, in the courts, and in the chambers, and in the purifying of all holy things, even the work of the service of the house of God, also
2 Chronicles 29:5
and said to them, Hear me, ye Levites. Now sanctify yourselves, and sanctify the house of LORD, the God of your fathers, and carry forth the filthiness out of the holy place.