Seven days before Yom HaKippurim they remove the high priest from his house to the chamber of the counselors and they set up another priest to take his place lest something should occur to him to disqualify him [from being able to worship]. Rabbi Judah said: they even prepare another wife for him in case his wife should die, as it says “And he shall make atonement for himself and for his house” (Leviticus 16:6): “his house” this refers to his wife. They said to him: if so there would be no end to the matter.

They delivered to him elders from the elders of the court and they read before him [throughout the seven days] from the order of the day. And they say to him, “Sir, high priest, you read it yourself with your own mouth, lest you have forgotten or lest you have never learned.” On the eve of Yom HaKippurim in the morning they place him at the eastern gate and pass before him oxen, rams and sheep, so that he may recognize and become familiar with the service.

All seven days they did not withhold food or drink from him. On the eve of Yom HaKippurim near nightfall they would not let him eat much because food brings about sleep.

The elders of the court handed him over to the elders of the priesthood and they took him up to the upper chamber of the house of Avtinas. They adjured him and then left. And they said to him [when leaving]: “Sir, high priest, we are messengers of the court and you are our messenger and the messenger of the court. We adjure you by the one that caused His name dwell in this house that you do not change anything of what we said to you.” He turned aside and wept and they turned aside and wept.

If he was a sage he would expound, and if not, the disciples of the sages would expound before him. If he was familiar with reading [the Scriptures] he would read, if not they would read before him. From what would they read before him? From Job, Ezra and Chronicles. Zechariah ben Kv’utal says: I have often read before him from Daniel.

If he wished to sleep, young priests would snap their middle finger before him and say: “Sir high priest, stand up and drive the sleep away by standing once on this [cold] floor. They would keep him busy until the time for the slaughtering [of the daily morning offering] would arrive.

Every day they would remove [the ashes from] the altar at the cock’s crow or close to that time, either before or after. But on Yom HaKippurim from midnight, and on the festivals at the [end of the] first watch; And the cock’s crow would not arrive before the Temple court was full of Israelites.