Yom Kippur - in The Torah

In The Torah

The Torah calls the day Yom HaKippurim (יוֹם הַכִּפּוּרִים) and in it Leviticus 23:27 decrees a strict prohibition of work and affliction of the appetite (נפש means soul or appetite) upon the tenth day of the seventh month, later known as Tishrei. The laws of Yom Kippur are mentioned in three passages in the Torah:

1. Leviticus 16:1–34: God told Moses to tell Aaron that he can only enter the sanctuary in front of the cover that is on the ark when God is present on the cover in a cloud. If Aaron is to enter otherwise, he will die . On the tenth day of the seventh month, God said that the people must not work in order to cleanse and atone for their sins. The Kohen will lead in the atonement of all the people.
2. Leviticus 23:26–32: God said to Moses that the tenth day of the month is the day of atonement and will be holy. The people must give a fire-offering to God and must not work. God told Moses that whoever does work, God will rid of the soul from its people. This is a day of complete rest from the evening of the ninth day of the month to the following evening.
3. 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.