(30) His own hands shall bring.--This act the owner himself was to perform, and it was not to be deputed to any one else. The manner in which this rite was performed in the time of Christ was as follows:--The offerer killed the sacrifice, and the priest sprinkled the blood. The victim was then flayed, and the officiating priest took out the inwards, cut the flesh into pieces, and separated the breast and the right shoulder. Whereupon he laid the fat first upon the owner's hands, then the breast, then the shoulder above it; the two kidneys and the caul of the liver above them again, and the bread above the whole, put his own hand under that of the offerer, and waved it all before the Lord. Hereupon the priest salted the inwards, and burned them upon the altar. The breast and right shoulder, as well as the bread waved before the Lord, were eaten by him and his brother priests, whilst the remainder of the flesh and the rest of the bread were eaten by the owner and his friends. If two persons brought a peace offering in partnership, one of them waved for both; and if a woman brought it, the waving was performed by the officiating priest, since women were not allowed to wave except in the offering of jealousy and of a Nazarite (Numbers 5:25; Numbers 6:20).

7:28-34 The priest who offered, was to have the breast and the right shoulder. When the sacrifice was killed, the offerer himself must present God's part of it; that he might signify his cheerfully giving it up to God. He was with his own hands to lift it up, in token of his regard to God as the God of heaven; and then to wave it to and fro, in token of his regard to God as the Lord of the whole earth. Be persuaded and encouraged to feed and feast upon Christ, our Peace-offering. This blessed Peace-offering is not for the priests only, for saints of the highest rank and greatest eminence, but for the common people also. Take heed of delay. Many think to repent and return to God when they are dying and dropping into hell; but they should eat the peace-offering, and eat it now. Stay not till the day of the Lord's patience be run out, for eating the third day will not be accepted, nor will catching at Christ when thou art gone to hell!His own hands shall bring the offerings of the Lord made by fire,.... That is, such parts of the peace offerings as were to be burnt with fire, as the fat on several parts described in Leviticus 3:3 the owners of the offerings were to bring them in the manner as will be presently observed:

the fat with the breast, it shall he bring; the fat to be burnt, and the breast for the priest and his sons, as in the following verse Leviticus 7:31,

that the breast may be waved for a wave offering before the Lord; how this waving was performed; see Gill on Exodus 29:24 particularly with respect to these peace offerings it was thus; if a thank offering, the priest takes of the bread brought with it one (cake) out of ten, and lays it with the breast, the shoulder, and the inwards, and waves all upon the hands of the owners; on which he puts the fat, then the breast and the shoulder above (i.e. upon the fat), then the two kidneys, and the caul, and the liver above them; and if there was any bread, he put it over them, and waved all, putting his hand under the hands of the owner (s).

(s) Maimon. Maaseh Hakorbanot, c. 9. sect. 6, 7. so Ben Gersom in loc.