As for the sons of Merari The third and youngest son of Levi:
thou shalt number them after their families, by the house of their fathers; which is the form of expression used of them all; (See Gill on Numbers 4:2).
27
Aaron and his sons will direct the Gershonites regarding all their duties, whether it involves moving the equipment or doing other work. They must assign the Gershonites responsibility for the loads they are to carry.
28
So these are the duties assigned to the Gershonite clans at the Tabernacle. They will be directly responsible to Ithamar son of Aaron the priest.
29
“Now record the names of the members of the clans and families of the Merarite division of the tribe of Levi.
30
List all the men between the ages of thirty and fifty who are eligible to serve in the Tabernacle.
31
“Their only duty at the Tabernacle will be to carry loads. They will carry the frames of the Tabernacle, the crossbars, the posts, and the bases;