Burning upon the altar carried this idea with it, that sin merited the fiery wrath of God. Leviticus 8:18.
Related Commentaries of Exodus 29:13
Exodus 29:13-14
13 And thou shalt take all the fat that covereth the inwards, and the caulb that is above the liver, and the two kidneys, and the fat that is upon them, and burn them upon the altar.
14 But the flesh of the bullock, and his skin, and his dung, shalt thou burn with fire without the camp: it is a sin offering.