1 Chronicles 9:33; Leviticus 8:35

33 Now these, the ssingers, the heads of fathers' houses of the Levites, were in the chambers of the temple free from other service, for they were on duty day and night.


35 At the entrance of the tent of meeting you shall remain day and night for seven days, performing what the Lord has qcharged, so that you do not die, for so I have been commanded.