2 Kings 11:6
a third shall be at the gate of Sur, and a third at the gate behind the guards. You are to take turns guarding the temple--

2 Kings 11:8
You must surround the king with weapons in hand, and anyone who approaches the ranks must be put to death. You must stay close to the king wherever he goes."

1 Chronicles 9:25
Their relatives came from their villages at fixed times to serve with them for seven-day periods.