Leviticus 10:17
Wherefore have ye not eaten the sin offering in the holy place, seeing it is most holy, and God hath given it you to bear the iniquity of the congregation, to make atonement for them before the LORD? Wherefore have ye not eaten the sin offering in the holy place, seeing it is most holy, and God hath given it you to bear the iniquity of the congregation, to make atonement for them before the LORD?
The sin offering was to be eaten in the holy place because it is most holy. God gave that offering to the priests to bear the iniquity of the congregation and to make atonement for them before the Lord.
When the blood of the offering was not carried into the holy place, God's appointed procedure was for the priest to eat its flesh and thereby bear the congregation's iniquity. Both procedures — eating the flesh and carrying or sprinkling the blood inside the holy place — equally symbolized the transfer of the penitent's sin from the sinner to the sanctuary.
The repeated yearly offerings acknowledged the law, confessed guilt, and expressed faith in the coming one who would take away sin, yet their blood only transferred sin to the sanctuary rather than fully freeing the sinner from the law's condemnation. On the Day of Atonement the high priest mediated for the people and their sins were symbolically carried away on the scapegoat, showing their separation from the people.