2 Chronicles 23:3

1 In the seventh year, Jehoiada made himself strong, and made an agreement with the captains of hundreds, Azariah, the son of Jeroham, Ishmael, the son of Jehohanan, Azariah, the son of Obed, Maaseiah, the son of Adaiah, and Elishaphat, the son of Zichri.

2 And they went through Judah, getting together the Levites and the heads of families in Israel from all the towns of Judah, and they came to Jerusalem.

3 And all the people made an agreement with the king in the house of God. And he said to them, Truly, the king's son will be king, as the Lord has said about the sons of David.

4 This is what you are to do: let a third of you, of the priests and Levites, who come in on the Sabbath, keep the doors;

5 And a third are to be stationed at the king's house; and a third at the doorway of the horses: while all the people are waiting in the open spaces round the house of the Lord.

6 But let no one come into the house of the Lord but only the priests and those of the Levites who have work to do there; they may go in for they are holy; but the rest of the people are to keep the orders of the Lord.