of the month to the following evening. Numbers 29:7–11: The tenth day of the seventh month is a holy day and one must not work. For an elevation offering, one must sacrifice a young bull, a ram and seven lambs who are a year old. As well, for a sin offering, one must sacrifice a male goat. Midrashic interpretation Traditionally, Yom Kippur is considered the date on which Moses received the second set of Ten Commandments. It occurred following the completion of the second 40 days of instructions from God. At this same time, the Israelites were granted atonement for the sin of the Golden Calf; hence, its designation as the Day of Atonement. Mishnaic and Talmudic literature Temple service The following summary of the Temple service is based on the traditional Jewish religious account described in Mishnah tractate Yoma, appearing in contemporary traditional Jewish prayer books for Yom Kippur, and studied as part of a traditional Jewish Yom Kippur worship service. While the Temple in Jerusalem was standing (from Biblical times through 70 CE), the Kohen Gadol (High Priest) was mandated by the Torah to perform a complex set of special services and sacrifices for Yom Kippur to attain Divine atonement, the word "kippur" meaning "atone" in Hebrew. These services were considered to be the most important parts of Yom Kippur because through them the Kohen Gadol made atonement for all Jews and the world. During the service, the Kohen Gadol entered the Holy of Holies in the center of the Temple, the only time of the year that anyone went inside. Doing so required special purification and preparation, including five immersions in a mikveh (ritual bath), and four changes of clothing. Seven days prior to Yom Kippur, the Kohen Gadol was sequestered in the Palhedrin chamber in the Temple, where he reviewed (studied) the service with the sages familiar with the Temple, and was sprinkled with spring water containing ashes of the Red Heifer as purification. The Talmud (Tractate Yoma) also reports that he practiced the incense offering ritual in the Avitnas chamber. On the day of Yom Kippur, the Kohen Gadol had to follow a precise order of services, sacrifices, and purifications: Morning (Tamid) offering: The Kohen Gadol first performed the regular daily (Tamid) offering—usually performed by ordinary priests—in special golden garments, after immersing in a mikveh and washing his hands and feet. Garment change 1: The