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
"All the service of the Gershonites, all their transportation duties and all their [other] work, is to be [done] at the command of Aaron and his sons; you are to assign to them all that they are responsible to carry.
28
This is the service of the Gershonite clans at the tent of meeting, and their duties will be under the direction of Ithamar son of Aaron the priest.
29
"As for the Merarites, you are to register them by their clans and their ancestral houses.
30
Register men from 30 years old to 50 years old, everyone who is qualified to do the work of the tent of meeting.
31
This is what they are responsible to carry as the whole of their service at the tent of meeting: the supports of the tabernacle, with its crossbars, posts, and bases,