28 Then the Lord spoke to Moses , saying , 29 "Speak to the sons of Israel , saying , 'He who offers the sacrifice of his peace offerings to the Lord shall bring his offering to the Lord from the sacrifice of his peace offerings . 30 'His own hands are to bring offerings by fire to the Lord . He shall bring the fat with the breast , that the breast may be presented as a wave offering before the Lord . 31 'The priest shall offer up the fat in smoke on the altar , but the breast shall belong to Aaron and his sons . 32 'You shall give the right thigh to the priest as a contribution from the sacrifices of your peace offerings . 33 'The one among the sons of Aaron who offers the blood of the peace offerings and the fat , the right thigh shall be his as his portion . 34 'For I have taken the breast of the wave offering and the thigh of the contribution from the sons of Israel from the sacrifices of their peace offerings , and have given them to Aaron the priest and to his sons as their due forever from the sons of Israel .

35 'This is that which is consecrated to Aaron and that which is consecrated to his sons from the offerings by fire to the Lord , in that day when he presented them to serve as priests to the Lord . 36 'These the Lord had commanded to be given them from the sons of Israel in the day that He anointed them. It is their due forever throughout their generations .' " 37 This is the law of the burnt offering , the grain offering and the sin offering and the guilt offering and the ordination offering and the sacrifice of peace offerings , 38 which the Lord commanded Moses at Mount Sinai in the day that He commanded the sons of Israel to present their offerings to the Lord in the wilderness of Sinai .

Matthew Henry's Commentary on Leviticus 7:28-38

Commentary on Leviticus 7:28-34

(Read Leviticus 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!

Commentary on Leviticus 7:35-38

(Read Leviticus 7:35-38)

Solemn acts of religious worship are not things which we may do or not do at our pleasure; it is at our peril if we omit them. An observance of the laws of Christ cannot be less necessary than of the laws of Moses.