2nd Chronicles 23:3

1 And in the seventh year Jehoiada strengthened himself, and took the captains of hundreds, Azariah the son of Jeroham, and Ishmael the son of Jehohanan, and Azariah the son of Obed, and Maaseiah the son of Adaiah, and Elishaphat the son of Zichri, into covenant with him.

2 And they went about in Judah, and gathered the Levites out of all the cities of Judah, and the heads of fathers` [houses] of Israel, and they came to Jerusalem.

3 And all the assembly made a covenant with the king in the house of God. And he said unto them, Behold, the king`s son shall reign, as Jehovah hath spoken concerning the sons of David.

4 This is the thing that ye shall do: a third part of you, that come in on the sabbath, of the priests and of the Levites, shall be porters of the thresholds;

5 and a third part shall be at the king`s house; and a third part at the gate of the foundation: and all the people shall be in the courts of the house of Jehovah.

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

7 And the Levites shall compass the king round about, every man with his weapons in his hand; and whosoever cometh into the house, let him be slain: and be ye with the king when he cometh in, and when he goeth out.