FRom thirty] These were to beare the heavier things of the Tabernacle, which were to be carried by men. The time of the Levites beginning their service of the Sanctuary was at the age of twenty five, Chap. 8. 24. and for some services, and for preparation to a compleat ministration, they were sometimes taken at twenty yeares of age. See Annot. on Chap. 3. vers. 15.