I think it is worthy remark here, that now Aaron is consecrated to the priesthood, he is commissioned to speak to the people; and Moses conveys the will of the LORD through him. And is he not here also a type of the ever-blessed JESUS, as our Mediator? Hebrews 1:1-2.
Related Commentaries of Leviticus 9:3
Leviticus 9:3
3 And unto the children of Israel thou shalt speak, saying, Take ye a kid of the goats for a sin offering; and a calf and a lamb, both of the first year, without blemish, for a burnt offering;