John Wesley on Leviticus 6:20

When he is anointed - For high - priest for he only of all the priests was to be anointed in future ages. This law of his consecration was delivered before, and is here repeated because of some additions made to it. Perpetual - Whensoever any of them shall be so anointed. At night - Or, in the evening; the one to be annexed to the morning - sacrifice, the other to the evening - sacrifice, over and besides that meal - offering which every day was to be added to the daily morning and evening sacrifices.