Numbers 8:22
After that, the Levites went in to do their service in the Tent of Meeting before Aaron, and before his sons: as Yahweh had commanded Moses concerning the Levites, so they did to them.
Numbers 8:15
"After that, the Levites shall go in to do the service of the Tent of Meeting: and you shall cleanse them, and offer them as a wave offering.
2 Chronicles 30:15-17
Then they killed the Passover on the fourteenth [day] of the second month: and the priests and the Levites were ashamed, and sanctified themselves, and brought burnt offerings into the house of Yahweh.
2 Chronicles 30:27
Then the priests the Levites arose and blessed the people: and their voice was heard, and their prayer came up to his holy habitation, even to heaven.
2 Chronicles 31:2
Hezekiah appointed the divisions of the priests and the Levites after their divisions, every man according to his service, both the priests and the Levites, for burnt offerings and for peace offerings, to minister, and to give thanks, and to praise in the gates of the camp of Yahweh.
2 Chronicles 35:8-15
His princes gave for a freewill offering to the people, to the priests, and to the Levites. Hilkiah and Zechariah and Jehiel, the rulers of the house of God, gave to the priests for the Passover offerings two thousand and six hundred [small livestock], and three hundred head of cattle.