2 Kings 11:5-9

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.”

So the captains of hundreds acted in accordance with everything that Jehoiada the priest commanded. And each one of them took his men who were to come in on the Sabbath, along with those who were to go out on the Sabbath, and they came to Jehoiada the priest.