15 Then take one of the sheep, and let Aaron and his sons put their hands on its head. 16 Then let it be put to death, so that the sides of the altar are marked with its blood. 17 Then the sheep is to be cut up into its parts, and after washing its legs and its inside parts, you are to put them with the parts and the head, 18 And let them all be burned on the altar as a burned offering to the Lord: a sweet smell, an offering made by fire to the Lord.
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.