Leviticus 6:26

26. The priest… shall eat God required the priests to eat the flesh in order that they might “bear (away, or expiate) the iniquity of the congregation, to make atonement for them.” Leviticus 10:17. Eating symbolizes the complete reception of any thing. Jeremiah 15:16; John 6:51. Hence the priests, as God’s representatives, by their incorporation with the sin offering gave assurance of the completeness of the reconciliation, and demonstrated that the sacrifice which entirely removes guilt, is converted even into the nutriment of the holiest life. Jesus is both our propitiation and our bread of life.

That offereth it for sin

Or expiates sin by it. The word expiates sin, in the Hebrew, is from the same radicals with sin offering. See 2 Corinthians 5:21.