1 Chronicles 23:28-32

²⁸For their office was to wait on the sons of Aaron for the service of the house of Yahweh, in the courts, and in the chambers, and in the purifying of all holy things, even the work of the service of the house of God; ²⁹for the show bread also, and for the fine flour for a meal-offering, whether of unleavened wafers, or of that which is baked in the pan, or of that which is soaked, and for all manner of measure and size; ³⁰and to stand every morning to thank and praise Yahweh, and likewise at even; ³¹and to offer all burnt offerings to Yahweh, on the Sabbaths, on the new moons, and on the set feasts, in number according to the ordinance concerning them, continually before Yahweh; ³²and that they should keep the charge of the tent of meeting, and the charge of the holy place, and the charge of the sons of Aaron their brothers, for the service of the house of Yahweh.