2 Chronicles 23:6

Let no one enter into the house of Yahweh except the priests and the ministering Levites. They themselves may enter, for they [are] holy, but all the people shall keep the requirements of Yahweh.

1 Chronicles 23:28-32

For their station [was] {to assist} the sons of Aaron with the service of the house of Yahweh, over the courtyards, over the chambers, and over the cleansing of all the sanctified objects, and [with] the work of the service of the house of God,

2 Kings 11:6-7

and another third at the gate of Sur, and a third at the gate behind the runners, shall guard the post of the palace alternately.

Treasury of Scripture Knowledge

Summary

But let none come into the house of the LORD, save the priests, and they that minister of the Levites; they shall go in, for they are holy: but all the people shall keep the watch of the LORD.

They that minister

Bible References

They that minister

2 Kings 11:6
and another third at the gate of Sur, and a third at the gate behind the runners, shall guard the post of the palace alternately.
1 Chronicles 23:28
For their station [was] {to assist} the sons of Aaron with the service of the house of Yahweh, over the courtyards, over the chambers, and over the cleansing of all the sanctified objects, and [with] the work of the service of the house of God,