1 Chronicles 9:23

21And Zechariah the son of Meshelemiah was porter of the door of the tabernacle of the congregation.

22All these which were chosen to be porters in the gates were two hundred and twelve. These were reckoned by their genealogy in their villages, whom David and Samuel the seer did ordain in their set office.

23So they and their children had the oversight of the gates of the house of the LORD, namely, the house of the tabernacle, by wards.

24In four quarters were the porters, toward the east, west, north, and south.

25And their brethren, which were in their villages, were to come after seven days from time to time with them.