(1) And the LORD called unto Moses, and spoke unto him out of the tent of meeting, saying: (2) Speak unto the children of Israel, and say unto them: When any man of you bringeth an offering unto the LORD, ye shall bring your offering of the cattle, even of the herd or of the flock. (3) If his offering be a burnt-offering of the herd, he shall offer it a male without blemish; he shall bring it to the door of the tent of meeting, that he may be accepted before the LORD. (4) And he shall lay his hand upon the head of the burnt-offering; and it shall be accepted for him to make atonement for him. (5) And he shall kill the bullock before the LORD; and Aaron’s sons, the priests, shall present the blood, and dash the blood round about against the altar that is at the door of the tent of meeting. (6) And he shall flay the burnt-offering, and cut it into its pieces. (7) And the sons of Aaron the priest shall put fire upon the altar, and lay wood in order upon the fire. (8) And Aaron’s sons, the priests, shall lay the pieces, and the head, and the suet, in order upon the wood that is on the fire which is upon the altar; (9) but its inwards and its legs shall he wash with water; and the priest shall make the whole smoke on the altar, for a burnt-offering, an offering made by fire, of a sweet savour unto the LORD.

For acceptance on his behalf.... That he offers it willingly, and not under duress.

Furthermore, it is said of a large ox, ‘An offering made by fire of a sweet savour’; of a small bird, ‘An offering made by fire of a sweet savour’; and of a meal-offering, ‘An offering made by fire of a sweet savour’: to teach you that it is the same whether one offers much or little, so long as he directs his heart to heaven. And lest you say, God needs it for food, the text therefore states (Psalms 50:12), If I were hungry, I would not tell you; for the world is Mine and the fullness thereof. And it also says (Psalms 50:10), For every beast of the forest is Mine, and the cattle upon a thousand hills. I know all the fowls of the mountains; and the wild beasts of the field are mine. Do I eat the flesh of bulls, or drink the blood of goats? I did not tell you to sacrifice so that you should say, I will do God's will that God will do my will. You do not sacrifice for My sake, but for your own sakes, as it is written (Lev. 19:5), At your will shall you sacrifice it.

Another interpretation is: ‘At your will shall you sacrifice it.’: sacrifice it of your own free will, sacrifice it with the proper intention.

 (3) Pleasing: "It pleases Me because I commanded it and My will was done.

Far be it that the Almighty should smell or eat. For, it is also written (Deuteronomy 32:38): Who ate the fat of their offerings? Rather, the meaning of this is that God accepts the offering (and the offerer) as a person who smells a sweet odor. as a sweet odor is to a human being."