2 Chronicles 29:15
They gathered their brothers (fellow Levites) together, consecrated themselves, and went in to cleanse the house of the Lord, as the king had commanded by the words of the Lord.
2 Chronicles 30:12
Also the hand of God was on Judah to give them one heart to do that which the king and the officials had commanded by the word of the Lord.
1 Chronicles 23:28
For their duty is to assist [the priests] the sons of Aaron in the service of the house of the Lord, in [caring for] the courtyards, the chambers, the purifying of all holy things, and any work of the service of the house of God,
2 Chronicles 29:5
Then he said to them, “Levites, listen to me! Now consecrate (dedicate) yourselves and consecrate the house of the Lord, the God of your fathers, and get the filth [of idol worship] out of the Holy Place.