1 Chronicles 9:18-19

18Until then they had been gatekeepers for the camps of the children of Levi at the King’s Gate on the east.

19Shallum the son of Kore, the son of Ebiasaph, the son of Korah, and his brethren, from his father’s house, the Korahites, were in charge of the work of the service, gatekeepers of the tabernacle. Their fathers had been keepers of the entrance to the camp of the Lord.