You shall take the anointing oil and pour it on his head and anoint him.
The ceremonies for consecrating Aaron and his sons had to be set down in detail so that they themselves would grasp the weight of what God called them to, and the people would learn to honor the office and keep their hands off it. The Hebrew word for consecrating means filling the hand, which tells us ministers have their hands full, no time for trifling, their work is so great and constant.
AI summary
Commenting on Exodus 29:1-37
Then thou shall take the anointing oil, After ordered to be made of principal spices, myrrh, cinnamon, calamus, cassia, and oil olive, Exo 30:23. and pour it upon his head, and anoint him; this was done, according to Jarchi, in the form of the letter "chi" as before; the oil was put upon his head and between his eyebrows, and he joined them with his...
Then shalt thou take the anointing oil - It appears, from Isa 61:1, that anointing with oil, in consecrating a person to any important office, whether civil or religious, was considered as an emblem of the communication of the gifts and graces of the Holy Spirit. This ceremony was used on three occasions, viz., the installation of prophets, priests, and kings, into their respective offices.