1 Chronicles 23:26-29

26Also, 1the Levites will no longer need to carry the tabernacle and all its utensils for its service.”

27For by the last words of David the sons of Levi were numbered from twenty years old and upward.

28For their office is 2to assist the sons of Aaron with the service of the house of the Lord, 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,

293and with the showbread, and 4the fine flour for a grain offering, and unleavened wafers, or 5what is baked in the pan or 6what is well-mixed, and 7all measures of volume and size.