We have here, I. The priests nominated: Aaron and his sons , Exod. 28:1. Hitherto every master of a family was priest to his own family, and offered, as he saw cause, upon altars of earth; but now that the families of Israel began to be incorporated into a nation, and a tabernacle of the congregation was to be erected, as a visible centre of their unity, it was requisite there should be a public p...