These include assisting him to abstain from any prohibitions in the Law that apply to him, and by affording him first rights in areas relating to holiness and the service of God.
After the sin of the Golden calf, God recounted the privilege of priesthood from the firstborn and gave it to Aaron, and his sons, as an everlasting priestly covenant.
[6] In a somewhat radical explanation Abraham ibn Ezra contends that the personality traits of the priest, given to him by God, are superior to those of the rest of the nation of Israel.
Rabbinic authorities explain that this sanctification is only applicable in the event where the Kohen is greater or equal in Torah knowledge to the other Jews present.
[9] Rashi interprets the requirement to sanctify the kohen at mealtime as affording him the initiation of making the Bracha of HaMotzi at the start of the meal.