Only the priests and Levites who are on duty will be able to enter the temple, because they will be the only ones who have gone through the ceremony to make themselves clean and acceptable. The others must stay outside in the courtyards, just as the LORD has commanded.
The Levites and the people of Judah followed Jehoiada's orders. The guards going off duty were not allowed to go home, and so each commander had all his guards available—those going off duty as well as those coming on duty.
Moses, Aaron, and his sons were to camp in front of the sacred tent, on the east side, and to make sure that the Israelites worshipped in the proper way. Anyone else who tried to do the work of Moses and Aaron was to be put to death.