2 Kings 11:5

Overview - 2 Kings 11
1	Jehoash, being saved by Jehosheba his aunt from Athaliah's massacre of the seed royal, is hid six years in the house of God.
4	Jehoiada, giving order to the captains, in the seventh year anoints him king.
13	Athaliah is slain.
17	Jehoiada restores the worship of God.

2 Kings 11:5  (King James Version)
And he commanded them, saying, This is the thing that ye shall do; A third part of you that enter in on the sabbath shall even be keepers of the watch of the king's house;