I Chronicles 9:23, 33
I Chronicles 9:23 NKJV
So they and their children were in charge of the gates of the house of the LORD, the house of the tabernacle, by assignment.
I Chronicles 9:33 NKJV
These are the singers, heads of the fathers’ houses of the Levites, who lodged in the chambers, and were free from other duties; for they were employed in that work day and night.