The covenant of priesthood must be made by sacrifice, as well as other covenants, Psa 50:5. And thus Christ was consecrated by the sacrifice of himself, once for all. Sacrifices of each kind must be offered for the priests, that they might with the more tenderness and concern offer the gifts and sacrifices of the people, with compassion on the ignorant, and on those that were out of the way, not insulting over those for whom sacrifices were offered, remembering that they themselves had had sacrifices offered for them, being compassed with infirmity. 1. A bullock, the largest sacrifice, was offered for a sin-offering (Lev 8:14), that hereby atonement might be made, and they might not bring any of the guilt of the sins of their former state into the new character they were now to put on. When Isaiah was sent to be a prophet, he was told to his comfort, Thy iniquity is taken away, Isa 6:7. Ministers, that are to declare the remission of sins to others, should give diligence to get it made sure to themselves in the first place that their own sins are pardoned. Those to whom is committed the ministry of reconciliation must first be reconciled to God themselves, that they may deal for the souls of others as for their own. 2. A ram was offered for a burnt-offering, Lev 8:18-21. By this they gave to God the glory of this great honour which was now put upon them, and returned him praise for it, as Paul thanked Christ Jesus for putting him into the ministry, Ti1 1:12. They also signified the devoting of themselves and all their services to the honour of God. 3. Another ram, called the ram of consecration, was offered for a peace-offering, Lev 8:22, etc. The blood of it was part put on the priests, on their ears, thumbs, and toes, and part sprinkled upon the altar; and thus he did (as it were) marry them to the altar, upon which they must all their days give attendance. All the ceremonies about this offering, as those before, were appointed by the express command of God; and, if we compare this chapter with Ex. 29, we shall find that the performance of the solemnity exactly agrees with the precept there, and in nothing varies. Here, therefore, as in the account we had of the tabernacle and its vessels, it is again and again repeated, As the Lord commanded Moses. And thus Christ, when he sanctified himself with his own blood, had an eye to his Father's will in it. As the Father gave me commandment so I do, Joh 14:31; Joh 10:18; Joh 6:38.

And waved them for a wave-offering - See the nature of this and the heave-offering in the note on Exo 29:27 (note).

And Moses took them from off their hands,.... After they had been waved before the Lord:

and burnt them upon the altar, upon the burnt offering; of the other ram; or after that burnt offering, as Jarchi, who observes, that we do not find that the shoulder of peace offerings was offered in any place but this, it belonged to the priest; but this being at the consecration of the priests, it was offered to the Lord by Moses, to whom it seems to have belonged, as the breast also, but that was not burnt, but eaten: and the same writer affirms, that Moses ministered all the seven days of the consecration in a white shirt, or surplice; and that he might wear a linen coat, as priests did, is not improbable, since he now officiated as one:

they were consecrated for a sweet savour; acceptable to the Lord, and so the priests, Aaron and his sons likewise, on whose account they were made:

it is an offering made by fire unto the Lord; the fat, the shoulder, and the cakes.

brought the other ram,--&c. After the sin offering and burnt offering had been presented on their behalf, this was their peace offering, by which they declared the pleasure which they felt in entering upon the service of God and being brought into close communion with Him as the ministers of His sanctuary, together with their confident reliance on His grace to help them in all their sacred duties.