John Calvin Commentary Numbers 4:24

"This is the service of the families of the Gershonites, in serving and in bearing burdens:" — Numbers 4:24 (ASV)

This is the service of the families of the Gershonites. The tasks He assigns to the sons of Gershon, as well as to the sons of Merari, are apparently lowly and laborious. For it was a hard and also a menial work to carry the curtains and the tabernacle, together with its coverings, the boards, too, and the bars, and the pillars.

But from this we learn that in God’s service nothing is to be despised; rather, each and every part of our duty should be cheerfully performed, since it ought to abundantly satisfy us that God has deigned to choose us as ministers of His sanctuary, so that neither weariness nor pride should ever hinder us in our duty.