1 Chronicles 26:18

and for Osa westward behind the gate of the chamber, three, a watch over against the watch of the ascent. On the east six a day, and on the north four, and on the south four, and at Esephim two to relieve each other, and at the west four, and for the causeway two to relieve each other.

to relieve guard, also for Osa westward after the chamber-gate, three. There was a ward over against the ward of the ascent eastward, six men in a day, and four for the north, and four for the south, and at the Esephim two to relieve guard, and four by the west, and two to relieve guard at the pathway.