Leviticus 3
This is the last of the freewill offerings. Like the Burnt offering it was the sacrifice of animals; like the meal offering or Minchah it was in part to be eaten. As with the former, the offerer laid his hand on the head of his offering, and slaughtered it at the entrance of the tent of meeting; and Aaron's sons the priests scattered rather than sprinkled the blood on the altar round about. It was, of course, presented like the Burnt offering before Jehovah; but no more than the fat that covers the inwards, and also the fat that is on the inwards, and the two kidneys, and the fat that is on them which is by the flank, and the net or caul upon the liver was to be taken away as far as the kidneys and burnt on the altar. The special feature of this offering, the Shelem, was to complete, as the cognate verb means. The aim was to express communion; and this it did with fullness indeed if we knew not who He is that inspired these communications through His servant Moses.
In the law of the sacrifice of peace offerings (Lev. 7:11-2111And this is the law of the sacrifice of peace offerings, which he shall offer unto the Lord. 12If he offer it for a thanksgiving, then he shall offer with the sacrifice of thanksgiving unleavened cakes mingled with oil, and unleavened wafers anointed with oil, and cakes mingled with oil, of fine flour, fried. 13Besides the cakes, he shall offer for his offering leavened bread with the sacrifice of thanksgiving of his peace offerings. 14And of it he shall offer one out of the whole oblation for an heave offering unto the Lord, and it shall be the priest's that sprinkleth the blood of the peace offerings. 15And the flesh of the sacrifice of his peace offerings for thanksgiving shall be eaten the same day that it is offered; he shall not leave any of it until the morning. 16But if the sacrifice of his offering be a vow, or a voluntary offering, it shall be eaten the same day that he offereth his sacrifice: and on the morrow also the remainder of it shall be eaten: 17But the remainder of the flesh of the sacrifice on the third day shall be burnt with fire. 18And if any of the flesh of the sacrifice of his peace offerings be eaten at all on the third day, it shall not be accepted, neither shall it be imputed unto him that offereth it: it shall be an abomination, and the soul that eateth of it shall bear his iniquity. 19And the flesh that toucheth any unclean thing shall not be eaten; it shall be burnt with fire: and as for the flesh, all that be clean shall eat thereof. 20But the soul that eateth of the flesh of the sacrifice of peace offerings, that pertain unto the Lord, having his uncleanness upon him, even that soul shall be cut off from his people. 21Moreover the soul that shall touch any unclean thing, as the uncleanness of man, or any unclean beast, or any abominable unclean thing, and eat of the flesh of the sacrifice of peace offerings, which pertain unto the Lord, even that soul shall be cut off from his people. (Leviticus 7:11‑21)) we find this distinction in point of character or motive. They might be offered for a thanksgiving with their appropriate unleavened cakes mingled with oil, and unleavened wafers anointed with oil, and cakes mingled with oil, of fine flour soaked, but not without cakes of leavened bread also; for man's taint is in his rendering of thanks. In this case the flesh of the sacrifice had to be eaten on the day of the offering, and none of it was to be left until the morning. But if the sacrifice of this offering were a vow or a voluntary offering, not only the flesh might be eaten on the day that it was presented, but the remainder of it on the morrow also, though the rest, if any, must be burnt on the third day. For if eaten then, so far from being accepted, it should be imputed an abomination to the offeror, and he that eat of it should bear his iniquity, just as uncleanness upon the eater would bring on him cutting off from his people. Thanksgiving is simple, and looked for from the simplest believer; but it has no such sustaining power as that devotedness of heart which Christ and His sacrifice more deeply known create in some that know God's grace better. There is no real communion apart from faith in Christ's sacrifice and the thanksgiving it calls forth. Separate from Him and the faith that owns His work, it is fleshly, abominable to God, and ruinous to man; but the energy of the Spirit which fills the heart with Christ and forms devotedness has greater permanence, and it produces greater vigilance against all that defiles, though this in principle is true of those born of God, however feeble they may be.
It is in the appendix of the same chapter (Lev. 7:28-3428And the Lord spake unto Moses, saying, 29Speak unto the children of Israel, saying, He that offereth the sacrifice of his peace offerings unto the Lord shall bring his oblation unto the Lord of the sacrifice of his peace offerings. 30His own hands shall bring the offerings of the Lord made by fire, the fat with the breast, it shall he bring, that the breast may be waved for a wave offering before the Lord. 31And the priest shall burn the fat upon the altar: but the breast shall be Aaron's and his sons'. 32And the right shoulder shall ye give unto the priest for an heave offering of the sacrifices of your peace offerings. 33He among the sons of Aaron, that offereth the blood of the peace offerings, and the fat, shall have the right shoulder for his part. 34For the wave breast and the heave shoulder have I taken of the children of Israel from off the sacrifices of their peace offerings, and have given them unto Aaron the priest and unto his sons by a statute for ever from among the children of Israel. (Leviticus 7:28‑34)) that we find the distinctive communion that belonged to the peace offering. The offeror’s own hands were to bring the first offering to Jehovah. The breast, for Aaron and his sons, was to be waved before Jehovah, as the fat was to be burnt upon the altar. The right shoulder was to be as a peace offering to the offering priest. The rest was for the offeror, his family or friends. Thus Jehovah had His portion, Christ as signified by the priest that presented the blood and the fat, He and His house (“whose house are we”), and the believers one with another, all entering into and enjoying the fellowship of Christ's work. But all uncleanness is peremptorily treated as incompatible with the feast on that sacrifice. If man's communion be prominent, the more care is taken that he forget not what is due to God and His holiness.