2 Chronicles 23:6-7

6But let no one enter the house (temple) of the Lord except the priests and the Levites who minister; they may enter, for they are holy. And let all the people carefully observe the law of the Lord.

7The Levites shall surround the [young] king, every man with his weapons in his hand; and whoever comes into the temple [breaking through the ranks of the guard to get near Joash] is to be killed. You are to be with the king when he comes in [from the temple chamber where he is hiding] and when he goes out.”