1 Chronicles 23:27-29

Revised Standard Version

²⁷ for by the last words of David these were the number of the Levites from twenty years old and upward— ²⁸ “but their duty shall be to assist the sons of Aaron for the service of the house of the Lord, having the care of the courts and the chambers, the cleansing of all that is holy, and any work for the service of the house of God; ²⁹ to assist also with the showbread, the flour for the cereal offering, the wafers of unleavened bread, the baked offering, the offering mixed with oil, and all measures of quantity or size.