Leviticus 10:12

12.And Moses spake unto Aaron, and unto Eleazar Lest hereafter the priests should transgress through ignorance, Moses admonishes them of their duty; and perhaps he was moved by some immediate reason to give these particular injunctions rather than any others. As yet they were but little practiced in the observance of the rites; and what had happened to their brethren must have rendered them anxious. Now, this consternation at the death of their brethren might have so confounded their senses, that they could not apply themselves with so much composure as they ought to the service of God; and thus the offering would have been improperly made. Lest, therefore, their grief should so disturb them as to prevent the due performance of their office, he commands them to eat what remained of the meat-offering with the burnt-sacrifices. Whence we gather that he endeavored to prevent them from transgressing on that day in consequence of their minds being occupied by their recent grief. And in order to induce them to obedience, he sets before them the authority of God, to which it was fitting that the priesthood should be subject, as being founded upon it.