Numbers 3:35

Eleazar the son of Aaron the priest shall be prince of the princes of the Levites, with the oversight of those who keep the requirements of the sanctuary.

Of Merari was the family of the Mahlites and the family of the Mushites. These are the families of Merari.

Those who were counted of them, according to the number of all the males from a month old and upward, were six thousand two hundred.

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,

the pillars of the court around it, their sockets, their pins, and their cords.

Those who encamp before the tabernacle eastward, in front of the Tent of Meeting toward the sunrise, shall be Moses, with Aaron and his sons, keeping the requirements of the sanctuary for the duty of the children of Israel. The outsider who comes near shall be put to death.