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
The sons of Gerson shall carry, by the commandment of Aaron and his sons: and each man shall know to what burden he must be assigned.
28
This is the service of the family of the Gersonites in the tabernacle of the covenant, and they shall be under the hand of Ithamar the son of Aaron the priest.
29
Thou shalt reckon up the sons of Merari also by the families and houses of their fathers,
30
From thirty years old and upward, unto fifty years old, all that go in to the office of their ministry, and to the service of the covenant of the testimony.
31
These are their burdens: They shall carry the boards of the tabernacle and the bars thereof, the pillars and their sockets,