But let no one come into the house of the LORD except the priests and those of the Levites who serve. They may go in, for they are holy; but all the people shall keep the watch of the LORD.
2 Chronicles 23:6
Surrounding context
23:5 one-third shall be at the king's house; and one-third at the Gate of the Foundation. All the people shall be in the courts of the house of the LORD.
23:6 But let no one come into the house of the LORD except the priests and those of the Levites who serve. They may go in, for they are holy; but all the people shall keep the watch of the LORD.
23:7 And the Levites shall surround the king on all sides, every man with his weapons in his hand; and whoever comes into the house, let him be put to death. You are to be with the king when he comes in and when he goes out."