Numbers 8:22
After this, the Levites went in to do their work in the tent of meeting before Aaron and before his sons. As the Lord had commanded Moses concerning the Levites, so they did.
Numbers 8:15
"After this, the Levites will go in to do the work of the tent of meeting. So you must cleanse them and offer them like a wave offering.
2 Chronicles 30:15-17
They slaughtered the Passover lamb on the fourteenth day of the second month. The priests and Levites were ashamed, so they consecrated themselves and brought burnt sacrifices to the Lord's temple.
2 Chronicles 30:27
The priests and Levites got up and pronounced blessings on the people. The Lord responded favorably to them as their prayers reached his holy dwelling place in heaven.
2 Chronicles 31:2
Hezekiah appointed the divisions of the priests and Levites to do their assigned tasks -- to offer burnt sacrifices and present offerings and to serve, give thanks, and offer praise in the gates of the Lord's sanctuary.
2 Chronicles 35:8-15
His officials also willingly contributed to the people, priests, and Levites. Hilkiah, Zechariah, and Jehiel, the leaders of God's temple, supplied 2,600 Passover sacrifices and 300 cattle.