4:47 From thirty years old and upward even unto fifty years old, every one that came to do {u} the service of the ministry, and the service of the burden in the tabernacle of the congregation,
(u) Whoever of the Levites that had any charge in the tabernacle.
4:34-49 God so ordered it, that though the Merarites were the fewest in number, yet they should have most able men among them; for whatever service God calls men to, he will furnish them for it, give strength in proportion to the work, and grace sufficient. The least of the tribes had many more able men than the Levites: those who engage in the service of this world, are many more than those devoted to the service of God. May our souls be wholly devoted to his service.