Bible Verses About Porters: Their posts were determined by lot

As their brothers the descendants of Aaron did, they also cast lots in the presence of King David and of Zadok, Ahimelech, and the heads of the families of the priests and Levites—the family heads and their younger brothers alike.

They cast lots for each gate, according to their families, young and old alike.

The lot for the East Gate fell to Shelemiah. Then lots were cast for his son Zechariah, a wise counselor, and the lot for the North Gate fell to him.

The lot for the South Gate fell to Obed-edom, and the lot for the storehouses to his sons.

The lots for the West Gate and the Shallecheth Gate on the ascending highway fell to Shuppim and Hosah. There were guards stationed at every watch.

Each day there were six Levites on the east, four on the north, four on the south, and two pairs at the storehouse.

As for the court on the west, there were four at the highway and two at the court.

These were the divisions of the gatekeepers who were descendants of Korah and Merari.