V.19 “All that be clean shall eat thereof.” In those days, a person was unclean, for instance, who had touched a dead body. For us believers this would be a picture of our socializing with worldly people — the unsaved person is dead (Eph. 2:1-3). Fellowship with unbelievers soils a believer (2 Cor. 6:14). But not to isolate ourselves from them. In our verse, the person could eat the sacrifice with his friends who were clean. It is easy to see that it does matter with whom we have communion.
V.22-27 Fat and blood were not to be eaten. They were only for God.
V.30-34 The breast of the sacrifice was for Aaron and his sons. The breast a picture of the love of Christ. The right shoulder was for the priest who made the offering. The shoulder a picture of the strength of Christ. Love and power combine in Him. He had His joy in giving Himself to God. This closes the subject of the offerings. All put together they represent the perfect, but varied, work of Christ on the cross. The time you take to think about these offerings will pay a rich reward. God doesn’t take seven chapters unless the subject is important. Our sins made the cross necessary.