31 This is the duty of their burden, according to all their service in the Tent of Meeting: the tabernacle's boards, its bars, its pillars, its sockets,
*Minor differences ignored. Grouped by changes, with first version listed as example.
And this is the charge of their burden,.... What should be committed to their care and charge, and they should bear and carry:
according to all their service in the tabernacle of the congregation; which was assigned to them as their part, and which was very heavy and cumbersome, and therefore they had wagons allowed them, Numbers 7:8,
the boards of the tabernacle, and the bars thereof, and the pillars thereof, and sockets thereof; all these belonged to the holy and to the most holy place; see Exodus 26:15.
Numbers 4:31 and Numbers 4:32, like Numbers 3:36 and Numbers 3:37. "The charge of their burden" (their carrying), i.e., the things which it was their duty to carry.
The sockets - Which were as the feet upon which the pillars stood.
*More commentary available at chapter level.