Two wagons and four oxen he gave unto the sons of Gershon, according to their service: Two wagons - unto the sons of Gershon - The Gershonites carried only the curtains, coverings, and hangings, Numbers 4:25. And although this was a cumbersome carriage, and they needed the wagons, yet it was not a heavy one.
Related Commentaries of Numbers 7:7
Numbers 7:7
7 Two wagons and four oxen he gave unto the sons of Gershon, according to their service: