young men] That is, some of the first-borne, (who untill the sonnes of Aaron were especially chosen for that service) were chiefe assistants to the father of the family, in such services, and who when their fathers were dead succeeded in their office; and whosoever offered the sacrifice, young men might be imployed in preparation and assistance, in the service which required the strength of bodily labours about it. See Annot. on Numbers 3:12.