Moses
Numbers 3:36ESV·traditional attribution

And the appointed guard duty of the sons of Merari involved the frames of the tabernacle, the bars, the pillars, the bases, and all their accessories; all the service connected with these;

Matthew Henry Presbyterian @wholebiblehenry

The Levites being granted to Aaron to minister to him, they are here delivered to him by tale, that he might know what he had, and employ them accordingly. Observe, I. By what rule they were numbered: Every male from a month old and upward, Num 3:15.

Commenting on Numbers 3:14-39

John Gill Reformed Baptist @doctorgill

And the pillars of the court round about,.... Of the great court which went round the tabernacle, on which pillars the hangings were hung: and their sockets; into which the, pillars were put; of both which see Exo 27:9, and their pins, and their cords, the pins were fixed in the ground, and the cords fastened the hangings of the court to them, whereby they...

Geneva Bible Notes Reformed @genevanotes

And [under] the custody and charge of the sons of Merari [shall be] the boards of the tabernacle, and the bars thereof, and the pillars thereof, and the sockets thereof, and all the vessels thereof, and all that serveth thereto, (m) The wood work and the rest of the instruments were committed to their charge.