10 Then let the ox be taken in front of the Tent of meeting: and let Aaron and his sons put their hands on its head. 11 And you are to put the ox to death before the Lord at the door of the Tent of meeting. 12 Then take some of the blood of the ox, and put it on the horns of the altar with your finger, draining out all the rest of the blood at the base of the altar. 13 And take all the fat covering the inside of the ox, and the fat joining the liver and the two kidneys with the fat round them, and let them be burned on the altar; 14 But the flesh of the ox and its skin and its waste parts are to be burned outside the circle of the tents, for it is a sin-offering.
Matthew Henry's Commentary on Exodus 29:10-14
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.