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

Exodus 6:24
The sons of Korah were Assir, Elkanah, and Abiasaph. These were the clans of the Korahites.

2 Kings 7:10
So they went and called out to the gatekeepers of the city, saying, "We went to the Aramean camp and no one was there--not a trace--only tethered horses and donkeys, and the tents were intact."

1 Chronicles 26:18
As for the court on the west, there were four at the highway and two at the court.

1 Chronicles 26:20
Now their fellow Levites were in charge of the treasuries of the house of God and the treasuries of the dedicated things.

These are the divisions of the porters among the sons of Kore, and among the sons of Merari.