2 Chronicles 23:6
No one is to enter the Lord’s temple but the priests and those Levites who serve;
1 Chronicles 23:28-32
“but their duty will be to assist the sons of Aaron with the service of the Lord’s temple, being responsible for the courts and the chambers, the purification of all the holy things, and the work of the service of God’s temple—
2 Kings 11:6-7
A third are to be at the Sur gate and a third at the gate behind the guards. You are to take turns providing protection for the palace.