I Chronicles 23:30

For their office was to wait on the sons of Aaron for the service of the house of the Lord, in the c...

for the show bread also, and for the fine flour for a meal offering, whether of unleavened wafers, o...

and to offer all burnt offerings to the Lord, on the Sabbaths, on the new moons, and on the set feas...

and that they should keep the duty of the Tent of Meeting, and the duty of the holy place, and the d...