6 And Moses said, "This is what the Lord has commanded you to do so that the glory of the Lord may appear to you." 7 Then Moses said to Aaron, "Come to the altar and sacrifice your sin offering and your burnt offering to purify yourself and the people. Then present the offerings of the people to purify them, making them right with the Lord, just as he has commanded."
Matthew Henry's Commentary on Leviticus 9:6-7
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.