Some of them were in charge of the articles used in worship, to count them whenever they were brought in or taken out.
We have here a further account of the good posture which the affairs of religion were put into immediately upon the return of the people out of Babylon. They had smarted for their former neglect of ordinances and under the late want of ordinances.
Commenting on 1 Chronicles 9:14-34
And other of their brethren, of the sons of the Kohathites, were over the shewbread, to prepare it every sabbath,.... Twelve loaves of which were set every week before the ark upon the shewbread table, and the old ones taken away: now the work of these Levites was to make this shewbread, and get it ready every week to be set upon the table, and...
1Ch 9:28 And of them (the Levites), some were over the vessels of the service, by which we are probably to understand the costly vessels, e.g., the golden cups for the libations, etc., which were brought from the treasure-chamber only for a short time for use in the service.