John Gill Commentary Leviticus 9

And it came to pass on the eighth day
When the seven days of consecration were ended, as Ben Gersom, the day following them, so soon was Aaron called to the execution of his office; and so both the Targum of Jonathan and Jarchi make it to be the eighth day of the consecration, or the day after the anointing of Aaron and his sons, and which they both say was the beginning, or first day of Nisan, the day the tabernacle was erected by Moses: but that seems to have been set up before the consecration; rather this was, as Aben Ezra says, the eighth day of the month Nisan or March, and was the eighth day of the consecration, which began at the first day, on which day the tabernacle was set up, (Exodus 40:2) :

[that] Moses, called Aaron and his sons, and the elders of Israel ;
Aaron and his sons to enter upon their office, by offering sacrifices for themselves, and for the people, and the elders to be witnesses thereof.

And he said unto Aaron
In the presence of the people of Israel:

take thee a young calf for a sin [offering] ;
one not exceeding a year old, as in (Leviticus 9:3) but this was not for the sin of making the calf only, to which the Jewish writers restrain it, but for all other sins of his, which it was necessary should be expiated before he offered sacrifices for the sins of others:

and a ram for a burnt offering ;
being a strong and innocent creature, was a proper emblem of Christ, the Lamb of God, that takes away by his sacrifice the sins of men:

without blemish ;
this character belongs, as Aben Ezra observes, both to the calf and ram, which were both to be without spot, and so proper types of Christ the Lamb without spot and blemish, free both from original and actual sin:

and offer [them] before the Lord ;
on the altar of burnt offering, which stood in the court of the tabernacle near where Jehovah was, to whom every sacrifice for sin was to be offered, being committed against him, and whose justice must be satisfied for it.

And unto the children of Israel you shall speak
That is, Aaron should speak to them, for being now high priest, Moses had no more to do with the sacrifices of the people, but it was incumbent on Aaron to call upon them to bring them to him such as the Lord by this law required of them:

saying, take you a kid of the goats for a sin [offering] ;
this creature fitly represented Christ as made sin, and an offering for sin, in the room of his people:

and a calf, and a lamb ;
both of them, as before observed, were proper emblems of Christ in his strength and innocence, sometimes called the fatted calf, and frequently the Lamb of God, (Luke 15:23) (John 1:29John 1:36) :

[both] of the first year, without blemish, for a burnt offering ;
denoting the tenderness of Christ, his spotless purity, and painful sufferings.

Also a bullock and a ram for peace offerings, to sacrifice
before the Lord
An offering being made for the atonement of sin, and the gift of a whole burnt offering accepted by the Lordupon that, peace offerings were to be sacrificed thereupon; one part of which belonged to the Lord, as thefat and the blood; another part to the priest, as the shoulder and the breast; and the rest to the owners tomake a feast with, expressive of the peace and joy which arise from the expiation and atonement of sin, bythe great sacrifice of Christ, in commemoration of which a feast is kept by the Lord's people:

and a meat offering mingled with oil ;
with oil olive; each of these offerings are treated of in the preceding chapters, where an account is givenof them, and the mystery of them explained:

for today the Lord will appear to you ;
or "and today", as in (Leviticus 9:6) so Noldius ^F5 ; for this is not observed as a reason whythe sacrifices were to be offered, but as a promise of the divine appearance, as an encouragement thereunto;and may have special respect to some visible splendour and lustre of the divine glory more than ordinary; andparticularly to the fire that should come out from before the Lord, and consume the sacrifice, (Leviticus 9:24) and so Ben Gersom interprets it. And this being on the eighth day of the consecration of the priests,may lead our thoughts to the day when our great High Priest rose from the dead, the day after the seventh, orthe Jewish sabbath, even on the eighth day, or first day of the week, on which he made frequent appearancesto his disciples; see (Mark 16:9Mark 16:12Mark 16:14) (John 20:19John 20:26) .

FOOTNOTES:

• F5: P. 395, No. 1340.

And they brought [that] which Moses commanded before the
tabernacle of the congregation
That is, Aaron and his sons, and all the children of Israel, as the Targum of Jonathan paraphrases it. All the above sacrifices they brought into the court of the tabernacle to be offered up:

and all the congregation drew near, and stood before the Lord ;
That is, the elders of Israel, who were called together, (Leviticus 9:1) , the heads of the tribes who represented the people; as many as well could be admitted into the court no doubt were, to be spectators of Aaron and his sons officiating first in their new office, and to see their own sacrifices offered; and they stood over against where was the symbol of the divine Presence; and the Targum of Jonathan says, they stood with a perfect heart; and no doubt but they were heartily sincere and upright in their sacrifices, as they had been in their donations toward the building the tabernacle, and providing things belonging to it; and they stood with all humility, reverence, and devotion.