Leviticus 1:2

Speak unto the children of Israel - It is important to observe that these first instructions Lev. 1:2-3:17 are addressed expressly to the individual who felt the need of sacrifice on his own account. They were not delivered through the priests, nor had the officiating priest any choice as to what he was to do. He was only to examine the victim to see that it was perfect Leviticus 22:17-24, and to perform other strictly prescribed duties Lev. 6:8-7:21. The act of offering was to be voluntary on the part of the worshipper, but the mode of doing it was in every point defined by the Law. The presenting of the victim at the entrance of the tabernacle was in fact a symbol of the free will submitting itself to the Law of the Lord. Such acts of sacrifice are to be distinguished from the public offerings, and those ordained for individuals on special occasions (see Leviticus 4:2 note), which belonged to the religious education of the nation.

Offering - Hebrew: qorbân - the general name for what was formally given up to the service of God (compare Mark 7:11), and exactly corresponding to the words "offering" and "oblation."