2 Kings 11:5-8

5And he commanded them, saying, This is the thing that ye shall do: a third part of you, that come in on the sabbath, shall be keepers of the watch of the king’s house; 6and a third part shall be at the gate Sur; and a third part at the gate behind the guard: so shall ye keep the watch of the house, and be a barrier. 7And the two companies of you, even all that go forth on the sabbath, shall keep the watch of the house of Jehovah about the king. 8And ye shall compass the king round about, every man with his weapons in his hand; and he that cometh within the ranks, let him be slain: and be ye with the king when he goeth out, and when he cometh in.