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
At the commandment of Aaron and his sons shall be all the service of the sons of the Gershonites, in all their carrying, and in all their service; and ye shall appoint unto them in charge all their carrying.
28
This is the service of the families of the sons of Gershon in the tent of meeting, and their charge shall be under the hand of Ithamar the son of Aaron the priest.
29
The sons of Merari: after their families, according to their fathers' houses shalt thou number them;
30
from thirty years old and upward even to fifty years old shalt thou number them, every one that entereth into the labour, to perform the service of the tent of meeting.
31
And this shall be the charge of their burden, according to all their service in the tent of meeting: the boards of the tabernacle, and the bars thereof, and the pillars thereof, and bases thereof,