1 Chronicles 23:27-29

New Catholic Bible

²⁷ Thus, according to the last instructions of David, the Levites who were twenty years or older were counted. ²⁸ Their responsibility was to assist the sons of Aaron in the service of the temple of the Lord, to be in charge of the courtyard and the inner chambers, to purify all of the holy things, and to fulfill other tasks in the temple of the Lord. ²⁹ They were responsible for the shewbread, for the flour for the cereal offerings, for the unleavened loaves, for the baking and the mixing, and for all the standards of measurement and size.