33 Of Merari was the family of the Mahlites, and the family of the Mushites. These are the families of Merari. 34 Those who were numbered of them, according to the number of all the males, from a month old and upward, were six thousand two hundred. 35 The prince of the fathers’ house of the families of Merari was Zuriel the son of Abihail. They shall encamp on the north side of the tabernacle. 36 The appointed duty of the sons of Merari shall be the tabernacle’s boards, its bars, its pillars, its sockets, all its instruments, all its service, 37 the pillars of the court around it, their sockets, their pins, and their cords.

Matthew Henry's Commentary on Numbers 3:33-37

Commentary on Numbers 3:14-39

(Read Numbers 3:14-39)

The Levites were in three classes, according to the sons of Levi; Gershon, Kohath, and Merari; and these were subdivided into families. The posterity of Moses were not at all honoured or privileged, but stood upon the level with other Levites; thus it was plain, that Moses did not seek the advancement of his own family, or to secure any honours to it. The tribe of Levi was by much the least of all the tribes. God's chosen are but a little flock in comparison with the world.