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
According to the word of Aaron and his sons shall be all the ministry of the sons of the Gershonites, in all their burdens and in all their service; and ye shall appoint unto them in charge all their burdens.
28
This is the service of the families of the sons of Gershon in the tabernacle of the testimony, and their charge shall be under the hand of Ithamar, the son of Aaron the priest.
29
As for the sons of Merari, thou shalt number them after their families, by the houses of their fathers.
30
From thirty years old and upward even unto fifty years old shalt thou number them, all that enters into the host, to do work in the tabernacle of the testimony.
31
And this shall be the charge of their burden, according to all their service in the tabernacle of the testimony: the boards of the tabernacle and the bars thereof and the pillars thereof and sockets thereof,