'Keepers' in the Bible

And Shallum the son of Kore, the son of Ebiasaph, the son of Korah, and his brethren, of the house of his father, the Korahites, were over the work of the service, keepers of the gates of the tabernacle: and their fathers, being over the host of the LORD, were keepers of the entry.

All those chosen to be gatekeepers at the thresholds were 212. They were enrolled by their genealogies in their villages [around Jerusalem], these men [whose grandfathers] David and Samuel the seer had appointed to their official duty.

There were keepers of the doors on the four sides, to the east, west, north, and south.

In all the places where I have gone with all Israel, did I ever say to any of the judges of Israel, whom I made the keepers of my people, Why have you not made for me a house of cedar?