And it came to pass on the eighth day, that Moses called Aaron and his sons, and the elders of Israel; Entrance of Aaron and his Sons upon their Office. - Lev 9:1-7. On the eighth day, i.e., on the day after the seven days' consecration, Aaron and his sons entered upon their duties with a solemn sacrifice for themselves and the nation, to which the Lord had made Himself known by a special revelation of His glory, to bear solemn witness before the whole nation that their service at the altar was acceptable to Him, and to impress the divine seal of confirmation upon the consecration they had received. To this end Aaron and his sons were to bring to the front of the tabernacle a young calf as a sin-offering for themselves, and a ram for a burnt-offering; and the people were to bring through their elders a he-goat for a sin-offering, a yearling calf and yearling sheep for a burnt-offering, and an ox and ram for a peace-offering, together with a meat-offering of meal mixed with oil; and the congregation (in the persons of its elders) was to stand there before Jehovah, i.e., to assemble together at the sanctuary for the solemn transaction (Lev 9:1-5). If, according to this, even after the manifold expiation and consecration, which Aaron had received through Moses during the seven days, he had still to enter upon his service with a sin-offering and burnt-offering, this fact clearly showed that the offerings of the law could not ensure perfection (Heb 10:1.). It is true that on this occasion a young calf was sufficient for a sin-offering for the priests, not a mature ox as in Lev 8:14 and Lev 4:3; and so also for the burnt-offerings and peace-offerings of the people smaller sacrifices sufficed, either smaller in kind or fewer in number than at the leading feasts (Num 28:11.). Nevertheless, not one of the three sacrifices could be omitted; and if no special peace-offering was required of Aaron, this may be accounted for from the fact, that the whole of the sacrificial ceremony terminated with a national peace-offering, in which the priests took part, uniting in this instance with the rest of the nation in the celebration of a common sacrificial meal, to make known their oneness with them.