Chronicles I 23:28

28 For he appointed them to wait on Aaron, to minister in the house of the Lord, over the courts, and over the chambers, and over the purification of all the holy things, and over the works of the service of the house of God;

Chronicles I 23:28 Meaning and Commentary

1 Chronicles 23:28

Because their office was to wait on the sons of Aaron
The priests:

for the service of the house of the Lord;
to assist them therein, and not to bear burdens as in times past; the Targum is,

``wherefore the place of their habitations was by the side of the sons of Aaron, for the worship of the sanctuary of the Lord:''

in the courts, and in the chambers, and in the purifying of all holy
things, and the work of the service of the house of God;
to keep the house, and all the apartments in it, courts and chambers, clean, by sweeping and washing them, and carrying out all the filth thereof made by the sacrifices, and otherwise.

Chronicles I 23:28 In-Context

26 And the Levites bore not the tabernacle, and all the vessels of it for its service.
27 For by the last words of David was the number of the Levites from twenty years old and upward.
28 For he appointed them to wait on Aaron, to minister in the house of the Lord, over the courts, and over the chambers, and over the purification of all the holy things, and over the works of the service of the house of God;
29 and for the shew-bread, and for the fine flour of the meat-offering, and for the unleavened cakes, and for the fried cake, and for the dough, and for every measure;
30 and to stand in the morning to praise and give thanks to the Lord, and so in the evening;

The Brenton translation of the Septuagint is in the public domain.