15 When they had assembled their brothers and consecrated themselves, they went in to cleanse the house of the LORD, according to the command of the king by the words of the LORD.
2 Chronicles 29:15 Cross References - MSB
1 Chronicles 23:28
28 but their duty was to assist the descendants of Aaron with the service of the house of the LORD, being responsible for the courts and chambers, the purification of all the holy things, and the work of the service of the house of God,
2 Chronicles 29:5
5 “Listen to me, O Levites,” he said. “Consecrate yourselves now and consecrate the house of the LORD, the God of your fathers. Remove from the Holy Place every impurity.
2 Chronicles 30:12
12 Moreover, the power of God was on the people in Judah to give them one heart to obey the command of the king and his officials according to the word of the LORD.