Leviticus 8:28

“And Moses took them from off their hands, etc.] 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…”

“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…”

“Moses: Exo 29:25; Psa 22:13, Psa 22:14; Zac 13:7; Heb 10:14-22 they were: Lev 8:22 Leviticus 8:29”