On all of these seven days he throws the blood, burns the incense, prepares the lamps, and offers the head and the hind leg. On all the other days [of the year], if he wishes to offer [any sacrifice], he may offer [it]. For the Kohen Gadol has the first right to offer and the first right to take a portion.

They provide him sages from among the sages of the court who read to him about the service of the day. Then they say to him, “My lord Kohen Gadol, read with your own mouth, perhaps you have forgotten or perhaps you have not learned.”  On the morning of the Eve of Yom Kippur they stand him at the Eastern Gate and they lead before him oxen, rams, and sheep, that he should recognize [them] and be conversant in the service.