11 Then you shall kill the bull before the Lord at the entrance of the tent of meeting, 12 and shall take part of the blood of the bull and put it on the horns of the altar with your finger, and the rest of[1] the blood you shall pour out at the base of the altar. 13 And you shall take all the fat that covers the entrails, and the long lobe of the liver, and the two kidneys with the fat that is on them, and burn them on the altar. 14 But the flesh of the bull and its skin and its dung you shall burn with fire outside the camp; it is a sin offering.
Matthew Henry's Commentary on Exodus 29:11-14
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.