Leviticus 8:22

“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.”

“Moses as the mediator of the covenant of the Law Galatians 3:19; Hebrews 8:6 was called to perform the priestly functions, in consecrating those on whom henceforth those functions were to devolve, and in inaugurating the legal order of sacrifices. See Exodus 40:23 note. The sin-offering was now offered for the first time. The succession in which the sacrifices followed each other on this occasion, first the sin-offering, then the burnt-offering, and lastly the peace-offering, has its ground in the meaning of each sacrifice, and became the established custom in later ages. The worshipper passed through a spiritual process. He had transgressed the Law, and he needed the atonement signified by…”

“8:22 ram of ordination: See Exod 29:19-34.”

“the ram of consecration: Lev 8:2, Lev 8:29, Lev 7:37; Exo 29:19-31; Joh 17:19; Co1 1:30; Co2 5:21; Eph 5:25, Eph 5:27; Rev 1:5, Rev 1:6 "The ram of consecration" was evidently a sacrifice of peace offering though presented on a particular occasion. Part of the blood was applied, not as that of the sin offering, to the horns of the altar, but to Aaron and his sons; to the tips of their right ears, the thumbs of their right hands, and the great toes of their right feet. implying their obligation to hearken diligently to the word of God - to do his work in the best manner which they could, and to walk in his ways with steady perseverance; and also, that they could not do these things acceptably…”