their service; being much heavier than theirs, having all the boards, pillars, sockets, pins; cords, &c. to bear and carry: thus Moses was directed of God wisely to dispose of those carriages, in proportion to the services each was employed in; and in a spiritual way, as the day, duty, and service of the people of God be, he proportions grace and strength to them to answer thereunto: under the hand of Ithamar the son of Aaron the priest; under whose care, inspection, and direction, were both the Gershonites and Merarites, Num 4:28 ; and by whom were delivered, according to the instruction of Moses, the several wagons and oxen, to them.