he was previously stationed at the King's Gate on the east side. These were the gatekeepers from the camp of the Levites.

1 Chronicles 9:17
These were the gatekeepers: Shallum, Akkub, Talmon, Ahiman, and their relatives. Shallum was their chief;

1 Chronicles 9:19
Shallum son of Kore, the son of Ebiasaph, the son of Korah, and his relatives from the Korahites were assigned to guard the thresholds of the Tent, just as their fathers had been assigned to guard the entrance to the dwelling of the LORD.

Jeremiah 35:4
and I brought them into the house of the LORD, to a chamber occupied by the sons of Hanan son of Igdaliah, a man of God. This room was near the chamber of the officials, which was above the chamber of Maaseiah son of Shallum the doorkeeper.

Ezekiel 44:1
The man then brought me back to the outer gate of the sanctuary that faced east, but it was shut.

Ezekiel 46:1
"This is what the Lord GOD says: 'The gate of the inner court that faces east must be kept shut during the six days of work, but on the Sabbath day and on the day of the New Moon it shall be opened.

Ezekiel 46:2
The prince is to enter from the outside through the portico of the gateway and stand by the gatepost, while the priests sacrifice his burnt offerings and peace offerings. He is to bow in worship at the threshold of the gate and then depart, but the gate must not be shut until evening.

Who till now waited in the king's gate eastward: they were porters in the companies of the children of Levi.