(17) Thou shalt cut the ram in pieces.—This was the ordinary practice, not only among the Hebrews, but also among other nations, as the Egyptians (Herod. ii. 40), the Greeks, the Romans, and others. It was probably found to facilitate the burning of the animal, which was with difficulty consumed entire. The shoulder, thigh, head, ribs, rump, heart, and kidneys appear separate in the representations of sacrifices on Egyptian altars.

29:1-37 Aaron and his sons were to be set apart for the priest's office, with ceremony and solemnity. Our Lord Jesus is the great High Priest of our profession, called of God to be so; anointed with the Spirit, whence he is called Messiah, the Christ; clothed with glory and beauty; sanctified by his own blood; made perfect, or consecrated through sufferings, Heb 2:10. All believers are spiritual priests, to offer spiritual sacrifices,Door of the tabernacle - Entrance of the tent. See Leviticus 8:3.10-22. And thou shalt cause a bullock to be brought before the tabernacle—This part of the ceremonial consisted of three sacrifices: (1) The sacrifice of a bullock, as a sin offering; and in rendering it, the priest was directed to put his hand upon the head of his sacrifice, expressing by that act a consciousness of personal guilt, and a wish that it might be accepted as a vicarious satisfaction. (2) The sacrifice of a ram as a burnt offering (Ex 29:15-18). The ram was to be wholly burnt, in token of the priest's dedication of himself to God and His service. The sin offering was first to be presented, and then the burnt offering; for until guilt be removed, no acceptable service can be performed. (3) There was to be a peace offering, called "the ram of consecration" (Ex 29:19-22). And there was a marked peculiarity in the manner in which this other ram was to be disposed of. The former was for the glory of God—this was for the comfort of the priest himself; and as a sign of a mutual covenant being ratified, the blood of the sacrifice was divided—part sprinkled on the altar round about, and part upon the persons and garments of the priests. Nay, the blood was, by a singular act, directed to be put upon the extremities of the body, thereby signifying that the benefits of the atonement would be applied to the whole nature of man. Moreover, the flesh of this sacrifice was to be divided, as it were, between God and the priest—part of it to be put into his hand to be waved up and down, in token of its being offered to God, and then it was to be burnt upon the altar; the other part was to be eaten by the priests at the door of the tabernacle—that feast being a symbol of communion or fellowship with God. These ceremonies, performed in the order described, showed the qualifications necessary for the priests. (See Heb 7:26, 27; 10:14). No text from Poole on this verse.

And thou shalt cut the ram in pieces,.... For the better convenience of laying it upon the wood on the altar, that it might be burnt; for it was to be a whole burnt offering:

and wash the inwards of him, and his legs; denoting the purity of the sacrifice of Christ, and that when his people give up themselves to God as a whole burnt offering, in the flames of love and zeal, their affections should be pure and sincere:

and put them unto his pieces, and unto his head; lay them together, so that they might be entirely consumed at once; signifying that Christ was both in soul and body an offering and a sacrifice of a sweet smelling savour to God; zeal for the honour of whose house, and the glory of his name, ate him up, as well as the fire of divine wrath; and so our whole souls, bodies and spirits, should be presented to the Lord as a holy, living, and acceptable sacrifice to him, which is more strongly suggested in the next verse.

And thou shalt cut the ram in pieces, and wash the inwards of him, and his legs, and put them unto his pieces, and unto his head.