2 Chronicles 29:4-5

29:4 He brought in the priests and Levites and assembled them in the square on the east side. 29:5 He said to them: “Listen to me, you Levites! Now consecrate yourselves, so you can consecrate the temple of the Lord God of your ancestors! Remove from the sanctuary what is ceremonially unclean!

2 Chronicles 29:24

29:24 Then the priests slaughtered them. They offered their blood as a sin offering on the altar to make atonement for all Israel, because the king had decreed that the burnt sacrifice and sin offering were for all Israel.

2 Chronicles 29:27

29:27 Hezekiah ordered the burnt sacrifice to be offered on the altar. As they began to offer the sacrifice, they also began to sing to the Lord, accompanied by the trumpets and the musical instruments of King David of Israel.

2 Chronicles 29:30

29:30 King Hezekiah and the officials told the Levites to praise the Lord, using the psalms of David and Asaph the prophet. So they joyfully offered praise and bowed down and worshiped.