Ezekiel 44:13-14

They would not be able to approach the Lord and serve Him; they could only serve the people. They would not be able to handle what was most holy, most closely associated with the Lord, in the temple. This would be a source of shame for them because of their former sins. Yet within this limitation the Lord promised to allow them to be in charge of the temple structure, its maintenance, and certain things that transpired there. The Levites in Solomon’s day had more responsibility (cf. 1 Chronicles 15:16; 1 Chronicles 16:4; 1 Chronicles 23:28-31).

"They have their counterparts today in all aspects of church life and doubtless then, as now, many reckoned it a privilege to be attending on the people of God in the more mundane details of their religion. After all, they were doing their duties by divine appointment (14)." [Note: Taylor, p. 271.]