7 Moses instructed Aaron, "Approach the Altar and sacrifice your Absolution-Offering and your Whole-Burnt-Offering. Make atonement for yourself and for the people. Sacrifice the offering that is for the people and make atonement for them, just as God commanded."
8 Aaron approached the Altar and slaughtered the calf as an Absolution-Offering for himself. 9 Aaron's sons brought the blood to him. He dipped his finger in the blood and smeared some of it on the horns of the Altar. He poured out the rest of the blood at the base of the Altar. 10 He burned the fat, the kidneys, and the lobe of the liver from the Absolution-Offering on the Altar, just as God had commanded Moses. 11 He burned the meat and the skin outside the camp.
Matthew Henry's Commentary on Leviticus 9:7-11
Commentary on Leviticus 9:1-21
(Read Leviticus 9:1-21)
These many sacrifices, which were all done away by the death of Christ, teach us that our best services need washing in his blood, and that the guilt of our best sacrifices needs to be done away by one more pure and more noble than they. Let us be thankful that we have such a High Priest. The priests had not a day's respite from service allowed. God's spiritual priests have constant work, which the duty of every day requires; they that would give up their account with joy, must redeem time. The glory of God appeared in the sight of the people, and owned what they had done. We are not now to expect such appearances, but God draws nigh to those who draw nigh to him, and the offerings of faith are acceptable to him; though the sacrifices being spiritual, the tokens of the acceptance are spiritual likewise. When Aaron had done all that was to be done about the sacrifices, he lifted up his hands towards the people, and blessed them. Aaron could but crave a blessing, God alone can command it.