1 Chronicles 23:28-29

28They were appointed to stand beside Aaron’s descendants to serve in the Lord’s temple. They were appointed to be in charge of the courtyards and the temple rooms, to ensure that all the holy things were clean, and to serve in God’s temple.

29They were also responsible for the rows of bread, the flour for the grain offerings, the unleavened bread wafers, and the bread made in frying pans. In addition, they were responsible for mixing the ingredients and keeping track of all weights and measures.