2 Kings 11:6
(another third being at the gate Sur and a third at the gate behind the guards) shall guard the palace.
1 Chronicles 26:13-19
And they cast lots by fathers' houses, small and great alike, for their gates.
2 Chronicles 23:4-5
This is the thing that you shall do: of you priests and Levites who come off duty on the Sabbath, one third shall be gatekeepers
Treasury of Scripture Knowledge
Summary
And a third part shall be at the gate of Sur; and a third part at the gate behind the guard: so shall ye keep the watch of the house, that it be not broken down.
The gate of sur
Bible References
The gate of sur
1 Chronicles 26:13
And they cast lots by fathers' houses, small and great alike, for their gates.
2 Chronicles 23:4
This is the thing that you shall do: of you priests and Levites who come off duty on the Sabbath, one third shall be gatekeepers