19 "Then take the second ram. Have Aaron and his sons place their hands on the ram's head. 20 Slaughter the ram. Take some of its blood and rub it on Aaron's right earlobe and on the right earlobes of his sons, on the thumbs of their right hands and on the big toes of their right feet. Sprinkle the rest of the blood against all sides of the Altar. 21 Then take some of the blood that is on the Altar, mix it with some of the anointing oil, and splash it on Aaron and his clothes and on his sons and their clothes so that Aaron and his clothes and his sons and his sons' clothes will be made holy. 22 "Take the fat from the ram, the fat tail, the fat that covers the innards, the long lobe of the liver, the two kidneys and the fat on them, and the right thigh: this is the ordination ram.

Matthew Henry's Commentary on Exodus 29:19-22

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.