Priestly Institution

[Lev. 8:2] Take Aaron and his sons with him, and the garments, and the anointing oil, and a bullock for the sin offering, and two rams, and a basket of unleavened bread;
3-5 impressing a profound conviction of the divine origin and authority of the priestly institution, the ceremonies of inauguration. At consecration they were subjected to entire ablution, though on ordinary occasions they were required, before entering on their duties, only to wash their hands and feet. This symbolical ablution was designed to teach them the necessity of inward purity, and the imperative obligation on those who bore the vessels and conducted the services of the sanctuary to be holy.
7-9 the splendor of the official vestments, together with the gorgeous tiara of the high priest, was intended, doubtless, in the first instance, to produce in the minds of the people a high respect for the ministers of religion, and in the next, from the predominant use of linen, to inculcate upon Aaron and his sons the duty of maintaining unspotted righteousness in their characters and lives.
10-12 took the anointing oil - which was designed to intimate that persons who acted as leaders in the solemn services of worship should have the unction of the Holy One both in His gifts and graces.
Priestly Coat symbolizes of the righteousness of G-d. We are humans and will make mistakes but He covers us in His righteousness.
Girded is a picture of the servants character, girding yourself to meet another need right where he is.
Bonnets is the cap is a picture of the mind bound by the authority of the Word of G-d. Keeping our minds guarded and only thinking on the things of the L-rd.
14-17 brought the bullock - a timely expression of their sense of unworthiness - a public and solemn confession of their personal sins and transference of their guilt to the typical victim,
18-21 brought the ram - as a token of their entire dedication to the service of G-d, symbolic of the life wholly available to His service.
V. 23. Ear was to hear and obey, with the recognition of His instructions.
Thumb that we serve as blood stained people, recognizing that we have no righteousness in ourselves, wilily being under His thumb.
Toe in walking through life with a reminder that the cleansing of G-d’s grace is needed every day.
25-29 fat - richness,
Thigh - strength,
Breast - G-d’s affection for us, bringing peace in our inner life.
27-30 other ram - after the sin and burnt offerings had been presented on their behalf, this was their peace offering, by which they declared the pleasure which they felt in entering upon the service of G-d and being brought into close communion with Him as thee minister of His Sanctuary, together with their confident reliance on His grace to help them in all their sacred duties.
After all these preliminaries, they had still to undergo a week’s probation in the court of the Tabernacle before they obtained permission to enter into the interior of the sacred building. During the whole of that period the same sacrificial rites were observed as on the first day, and they were expressly admonished that the smallest breach of any of the appointed observances would lead to the certain forfeiture of their lives. V. 35