2 Chronicles 23:4-6

Young's Literal Translation

⁴ `This [is] the thing that ye do: The third of you, going in on the sabbath, of the priests, and of the Levites, [are] for gatekeepers of the thresholds,

⁵ and the third [are] at the house of the king, and the third at the gate of the foundation, and all the people [are] in the courts of the house of Jehovah.

⁶ `And none doth enter the house of Jehovah except the priests, and those ministering of the Levites (they go in for they [are] holy), and all the people keep the watch of Jehovah: