These two verses contain one statement, namely: The sons of Laadan, that is, the sons of the Gershonite belonging to Laadan, the heads of the h…

As concerning the sons of Laadan
The same with Libni, see (1 Chronicles 23:7)

The porters and treasurers of the temple needed strength and valor to oppose those who wrongly attempted to enter the sanctuary and to guard the sa…