1 Chronicles 26:13-19

They were assigned by families for guard duty at the various gates, without regard to age or training, for it was all decided by means of sacred lots. The responsibility for the east gate went to Meshelemiah and his group. The north gate was assigned to his son Zechariah, a man of unusual wisdom. The south gate went to Obed-edom, and his sons were put in charge of the storehouse. Shuppim and Hosah were assigned the west gate and the gateway leading up to the Temple. Guard duties were divided evenly. Six Levites were assigned each day to the east gate, four to the north gate, four to the south gate, and two pairs at the storehouse. Six were assigned each day to the west gate, four to the gateway leading up to the Temple, and two to the courtyard. These were the divisions of the gatekeepers from the clans of Korah and Merari.