15 And they gathered their brothers and sanctified themselves, and came in, according to the commandment of the king in the matters of Jehovah, to cleanse the house of Jehovah.
2 Chronicles 29:15 Cross References - LITV
1 Chronicles 23:28
28 because their office was to wait on the sons of Aaron for the service of the house of Jehovah, in the courts, and in the chambers, and in the purifying of all holy things, and the work of the service of God's house,
2 Chronicles 29:5
5 And he said to them, Hear me, O Levites, now consecrate yourselves. And consecrate the house of Jehovah, the God of your fathers, and bring out the uncleanness from the holy place.
2 Chronicles 30:12
12 Also, in Judah the hand of God was to give to them one heart to do the king's command, and of the leaders, by the word of Jehovah.