11 'This is the law of the sacrifice of peace offerings which he shall offer to the Lord: 12 If he offers it for a thanksgiving, then he shall offer, with the sacrifice of thanksgiving, unleavened cakes mixed with oil, unleavened wafers anointed with oil, or cakes of blended flour mixed with oil. 13 Besides the cakes, as his offering he shall offer leavened bread with the sacrifice of thanksgiving of his peace offering. 14 And from it he shall offer one cake from each offering as a heave offering to the Lord. It shall belong to the priest who sprinkles the blood of the peace offering. 15 'The flesh of the sacrifice of his peace offering for thanksgiving shall be eaten the same day it is offered. He shall not leave any of it until morning.
Matthew Henry's Commentary on Leviticus 7:11-15
Commentary on Leviticus 7:11-27
(Read Leviticus 7:11-27)
As to the peace-offerings, in the expression of their sense of mercy, God left them more at liberty, than in the expression of their sense of sin; that their sacrifices, being free-will offerings, might be the more acceptable, while, by obliging them to bring the sacrifices of atonement, God shows the necessity of the great Propitiation. The main reason why blood was forbidden of old, was because the Lord had appointed blood for an atonement. This use, being figurative, had its end in Christ, who by his death and blood-shedding caused the sacrifices to cease. Therefore this law is not now in force on believers.