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, Heb 2:10. All believers are spiritual priests, to offer spiritual sacrifices,

Ex 29:36, 37. Consecration of the Altar.

36. and thou shalt cleanse the altar—The phrase, "when thou hast made an atonement for it," should be, upon it; and the purport of the direction is, that during all the time they were engaged as above from day to day in offering the appointed sacrifices, the greatest care was to be taken to keep the altar properly cleansed—to remove the ashes, and sprinkle it with the prescribed unction that, at the conclusion of the whole ceremonial, the altar itself should be consecrated as much as the ministers who were to officiate at it (Mt 23:19). It was thenceforth associated with the services of religion.