15 Thou shalt also take the one ram; and Aaron and his sons shall lay their hands upon the head of the ram. 16 And thou shalt slay the ram, and thou shalt take its blood, and sprinkle it round about upon the altar. 17 And thou shalt cut the ram into its pieces, and wash its inwards, and its legs, and put them with its pieces, and with its head. 18 And thou shalt burn the whole ram upon the altar: it is a burnt-offering unto Jehovah; it is a sweet savor, an offering made by fire unto Jehovah.
Matthew Henry's Commentary on Exodus 29:15-18
Commentary on Exodus 29:1-37
(Read Exodus 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, Matthew 12:28,) and by him the merit of Christ is applied to our souls. This consecration signifies the admission of a sinner into the spiritual priesthood, to offer spiritual sacrifices, acceptable to God through Jesus Christ.