The consecration of the priests. See the notes to Leviticus 8–9.

Exodus 29:4: Door of the tabernacle - Entrance of the te…

You shall take of the blood ... and put it upon the horns of the altar. — It has been already noticed that the virtue of …

And you shall take the blood of the bullock
Being slain, and its blood received into a basin:

and…

Aaron and his sons were to be set apart for the priest's office with ceremony and solemnity.