2nd Chronicles 29:14

11 My sons, take care now: for you have been marked out by the Lord to come before him and to be his servants, burning offerings to him.

12 Then the Levites took their places; Mahath, the son of Amasai, and Joel, the son of Azariah, among the Kohathites; and of the sons of Merari, Kish, the son of Abdi, and Azariah, the son of Jehallelel; and of the Gershonites, Joah, the son of Zimmah, and Eden, the son of Joah;

13 And of the sons of Elizaphan, Shimri and Jeuel; and of the sons of Asaph, Zechariah and Mattaniah;

14 And of the sons of Heman, Jehuel and Shimei; and of the sons of Jeduthun, Shemaiah and Uzziel.

15 And they got their brothers together and made themselves holy, and went in, as the king had said by the word of the Lord, to make the house of the Lord clean.

16 And the priests went into the inner part of the house of the Lord to make it clean, and everything unclean which was to be seen in the Temple of the Lord they took out into the outer square of the Lord's house, and the Levites got it together and took it away to the stream Kidron.

17 On the first day of the first month the work of making the house holy was started, and on the eighth day they came to the covered way of the Lord; in eight days they made the Lord's house holy, and on the sixteenth day of the first month the work was done.