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,Door of the tabernacle - Entrance of the tent. See Leviticus 8:3.4-9. Aaron and his sons thou shalt bring unto the door of the tabernacle—as occupying the intermediate space between the court where the people stood, and the dwelling-place of Israel's king, and therefore the fittest spot for the priests being duly prepared for entrance, and the people witnessing the ceremony of inauguration.

wash them with water. And … take the garments—The manner in which these parts of the ceremonial were performed is minutely described, and in discovering their symbolical import, which indeed, is sufficiently plain and obvious, we have inspired authority to guide us. It signified the necessity and importance of moral purity or holiness (Isa 52:11; Joh 13:10; 2Co 7:1; 1Pe 3:21). In like manner, the investiture with the holy garments signified their being clothed with righteousness (Re 19:8) and equipped as men active and well-prepared for the service of God; the anointing the high priest with oil denoted that he was to be filled with the influences of the Spirit, for the edification and delight of the church (Le 10:7; Ps 45:7; Isa 61:1; 1Jo 2:27), and as he was officially a type of Christ (Heb 7:26; Joh 3:34; also Mt 3:16; 11:29).

A perpetual statute; so long as the Jewish pedagogy and policy lasts.

And thou shalt gird them with girdles (Aaron and his sons),.... Aaron with the girdle of the ephod, and with the girdle of needlework, and his sons with common girdles made for them; all which showed what strength, diligence, and expedition were necessary for the discharge of their office:

and put the bonnets on them; upon their heads, which differed only from the high priest's mitre in the manner of rolling or wrapping, as has been observed on Exodus 28:39,

and the priest's office shall be theirs for a perpetual statute; that is, shall descend from father to son in Aaron's family throughout all generations, until the Messiah should come; who would be a priest of another order, and put an end to the Aaronic priesthood, by fulfilling what that was a type of, and so abolishing it:

and thou shall consecrate Aaron and his sons; or "fill the hand of them"; that is, with sacrifices to offer for themselves and others; see Gill on Exodus 28:41. The Targums of Onkelos and Jonathan are,"shall offer the offering of Aaron, and the offering of his sons,''of which there is an after account, and was one part of their consecration.

And thou shalt gird them with girdles, Aaron and his sons, and put the bonnets on them: and the priest's office shall be theirs for a perpetual statute: and thou shalt consecrate Aaron and his sons.