1 Chronicles 9:23-25

New International Version

²³ They and their descendants were in charge of guarding the gates of the house of the Lord—the house called the tent of meeting. ²⁴ The gatekeepers were on the four sides: east, west, north and south. ²⁵ Their fellow Levites in their villages had to come from time to time and share their duties for seven-day^(A) periods.