2 Chronicles 23:4

This is what you must do. One third of you priests and Levites who are on duty during the Sabbath will guard the doors.

1 Chronicles 9:25

Their relatives, who lived in their settlements, came from time to time and served with them for seven-day periods.

1 Chronicles 23:3-6

The Levites who were thirty years old and up were counted; there were 38,000 men.

1 Chronicles 24:3-6

David, Zadok (a descendant of Eleazar), and Ahimelech (a descendant of Ithamar) divided them into groups to carry out their assigned responsibilities.

1 Chronicles 26:13-16

They cast lots, both young and old, according to their families, to determine which gate they would be responsible for.

Luke 1:8-9

Now while Zechariah was serving as priest before God when his division was on duty,

Treasury of Scripture Knowledge

Summary

This is the thing that ye shall do; A third part of you entering on the sabbath, of the priests and of the Levites, shall be porters of the doors;

Bible References

Entering

1 Chronicles 23:3
The Levites who were thirty years old and up were counted; there were 38,000 men.
1 Chronicles 24:3
David, Zadok (a descendant of Eleazar), and Ahimelech (a descendant of Ithamar) divided them into groups to carry out their assigned responsibilities.
Luke 1:8
Now while Zechariah was serving as priest before God when his division was on duty,

Porters

1 Chronicles 26:13
They cast lots, both young and old, according to their families, to determine which gate they would be responsible for.

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