2 Kings 11:4-8

Now in the seventh year Jehoiada sent orders and brought the captains of hundreds of the Carites and of the guards, and brought them to himself at the house of the Lord. Then he made a covenant with them and put them under oath at the house of the Lord, and showed them the king’s son.

And he commanded them, saying, “This is the thing that you shall do: a third of you, who come in on the Sabbath and keep watch over the king’s house

(a third also shall be at the gate Sur, and a third at the gate behind the guards), shall keep watch over the house for defense.

And two parts of you, all who go out on the Sabbath, shall also keep watch over the house of the Lord for the king.

Then you shall surround the king, each with his weapons in his hand; and whoever comes within the ranks shall be put to death. And you are to be with the king when he goes out and when he comes in.”