Some health requirements are part of the legislation as well. “Any meat of the sacrifice left over till the third day must be burned up. If any meat of the fellowship offering is eaten on the third day, the one who offered it will not be accepted. It will not be reckoned to their credit, for it has become impure; the person who eats any of it will be held responsible” (7:17-18). In the desert with no refrigeration I would say that it would definitely be impure by the third day! Obedience means that they will not eat it after the second day, not because it will make them sick, but because it will not be reckoned to their credit.
Leviticus 8 describes how they consecrated Aaron and his garments and his sons and their garments. This concludes with the important statement that “Aaron and his sons did everything the Lord commanded through Moses” ( 8:36). The following chapter describes the completion of the sin and fellowship offerings before the Lord. This time the conclusion is not just a statement but an act of God: “Fire came out from the presence of the Lord and consumed the burnt offering and the fat portions on the altar. And when all the people saw it, they shouted for joy and fell facedown” (9:24).