What does it say?
The guilt offering and the sin offering are to be treated the same by the priest and should be treated as holy. Peace offerings are to be eaten on the day that they were sacrificed but freewill offerings may be eaten that day and the next day but not on the third day; whatever is left on the third day shall be burned with fire outside the camp. These things are not to be eaten by persons who are not ceremonially clean and whatever touches an unclean thing shall not be eaten but is to be burned. The sons of Israel were not to eat any fat or the blood of any animal. The peace offering is slayed by the sons of Israel. The fat and the breast and the right thigh are given to the priest. The priest offers up the fat in smoke on the altar. The breast is waved before the Lord and eaten by the priest, also the right thigh belongs to the priest.
What does it mean?
In the old covenant there was a separation between the priest and the common man. The priest could do things that the common man could not do. The common man could not eat the flesh of an animal that was offered as a burnt offering, guilt offering or sin offering but the priests could eat the flesh. However, no son of Israel, not even a priest could eat the fat or the blood of any animal. The fat and the blood belong to the Lord. The life of the animal was in the blood.
What shall I do?
I shall consider that there has been a change in covenant. In John 6:54, Jesus said:
He who eats My flesh and drinks My blood has eternal life, and I will raise him up on the last day. (NASB)
In the old covenant, the guilt and sin offering were considered most holy; therefore, only the priest who were sanctified to the Lord could eat of the flesh but they could not consume the blood. God became flesh in the person of Jesus, the Christ, the Son of God. He offered up his own body and his own life for us all. To be raised up on the last day, we must eat of his flesh and drink of his blood, which was offered up to God as a sin sacrifice for us, considered as most holy. The bread and the wine eaten in memory of Jesus Christ represents his flesh and his blood. We eat his flesh and drink his blood when we believe that he is God in human flesh and believe that his death on the cross was a sin sacrifice for us. Therefore, I shall have repentance towards God and faith in Jesus Christ, that he will raise me up on the last day.