21 It shall be made with oil on a griddle. You shall bring it well mixed, in baked[1] pieces like a grain offering, and offer it for a pleasing aroma to the Lord. 22 The priest from among Aaron's sons, who is anointed to succeed him, shall offer it to the Lord as decreed forever. The whole of it shall be burned. 23 Every grain offering of a priest shall be wholly burned. It shall not be eaten."
24 The Lord spoke to Moses, saying, 25 "Speak to Aaron and his sons, saying, This is the law of the sin offering. In the place where the burnt offering is killed shall the sin offering be killed before the Lord; it is most holy. 26 The priest who offers it for sin shall eat it. In a holy place it shall be eaten, in the court of the tent of meeting. 27 Whatever touches its flesh shall be holy, and when any of its blood is splashed on a garment, you shall wash that on which it was splashed in a holy place. 28 And the earthenware vessel in which it is boiled shall be broken. But if it is boiled in a bronze vessel, that shall be scoured and rinsed in water. 29 Every male among the priests may eat of it; it is most holy. 30 But no sin offering shall be eaten from which any blood is brought into the tent of meeting to make atonement in the Holy Place; it shall be burned up with fire.
Matthew Henry's Commentary on Leviticus 6:21-30
Commentary on Leviticus 6:14-23
(Read Leviticus 6:14-23)
The law of the burnt-offerings put upon the priests a great deal of care and work; the flesh was wholly burnt, and the priests had nothing but the skin. But most of the meat-offering was their own. It is God's will that his ministers should be provided with what is needful.
Commentary on Leviticus 6:24-30
(Read Leviticus 6:24-30)
The blood of the sin-offering was to be washed out of the clothes on which it should happen to be sprinkled, which signified the regard we ought to have to the blood of Christ, not counting it a common thing. The vessel in which the flesh of the sin-offering was boiled must be broken, if it were an earthen one; but if a brazen one, well washed. This showed that the defilement was not wholly taken away by the offering; but the blood of Christ thoroughly cleanses from all sin. All these rules set forth the polluting nature of sin, and the removal of guilt from the sinner to the sacrifice. Behold and wonder at Christ's love, in that he was content to be made a sin-offering for us, and so to procure our pardon for continual sins and failings. He that knew no sin was made sin (that is, a sin-offering) for us, Romans 8:3.