For his offering - The leavened bread was a distinct offering.

Besides the cakes,.... The unleavened cakes, and the unleavened wafers, and the fried cakes; or with these, as Aben Ezra and Abendana interpret it:

he shall offer for his offering leavened bread, with the sacrifice of thanksgiving of his peace offerings; not that this was offered upon the altar, for all leaven was forbidden there, Leviticus 2:11 but it was given to the priest, that he might have change of bread, and such as was agreeable to him, to eat with the flesh of the peace offerings he had a share of, and to the owners also; and the whole of this consisted of ten cakes likewise, as will appear by what Maimonides (g) says; he (the offerer) takes twenty tenths of fine flour, and makes ten leavened, and ten unleavened; the ten leavened he makes into ten cakes, and the ten unleavened he makes of them eighty cakes alike, ten cakes of every sort, ten cakes baked in an oven, ten cakes wafers, and ten cakes slightly baked.

(g) Maaseh Hakorbanot, c. 9. sect. 17, 18, 21.

This sacrificial gift the offerer was to present upon, or along with, cakes of leavened bread (round, leavened bread-cakes), and to offer "thereof one out of the whole oblation," namely, one cake of each of the three kinds mentioned in Leviticus 7:12, as a heave-offering for Jehovah, which was to fall to the priest who sprinkled the blood of the peace-offering. According to Leviticus 2:9, an azcarah of the unleavened pastry was burned upon the altar, although this is not specially mentioned here any more than at Leviticus 7:9 and Leviticus 7:10; whereas none of the leavened bread-cake was placed upon the altar (Leviticus 2:12), but it was simply used as bread for the sacrificial meal. There is nothing here to suggest an allusion to the custom of offering unleavened sacrificial cakes upon a plate of leavened dough, as J. D. Michaelis, Winer, and others suppose.

Besides the cakes, he shall offer for his offering leavened bread with the sacrifice of thanksgiving of his peace offerings.

7:13 Leavened bread - Because this was a sacrifice of another kind than those in which leaven was forbidden, this being a sacrifice of thanksgiving for God's blessings, among which leavened bread was one. Leaven indeed was universally forbidden, Lev 2:11. But that prohibition concerned only things offered and burnt upon the altar, which this bread was not.

[2] {leaven]

The use of leaven here is significant. Peace with God is something which the believer shares with God. Christ is our peace-offering Eph 2:13. Any thanksgiving for peace must, first of all, present Him. In verse 12 we have this, in type, and Song leaven is excluded. In verse 13 it is the offerer who gives thanks for his participation in the peace, and Song leaven fitly signifies, that though having peace with God through the work of another, there is still evil in him. This is illustrated in Amos 4:5 where the evil in Israel is before God.

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.