YHWH spoke to Moshe, saying: Mark, on the tenth of this seventh month,
it is the Day of Atonement;
a proclamation of holiness shall there be for you. You are to afflict your selves,
and you are to bring-near a fire-offering to YHWH; any-kind of work you are not to do on that same day, for it is the Day of Atonement, to effect-atonement for you before the presence of YHWH your God. Indeed, if any person does not afflict-himself on that same day, he is to be cut-off from his kinspeople, and if any person does any-kind of work on that same day— I will cause that person to perish from amid his kinspeople! Any-kind of work you are not to do— a law for the ages, into your generations, throughout all your settlements. It is Sabbath, a Sabbath-ceasing for you, you are to afflict your selves;
on the ninth of the month, at sunset,
from sunset to sunset, you are to make-a-ceasing of your ceasing!
Rabbi Shlomo Yitzchaki (Rashi) lived in Troyes, France (1040-1105). Rashi’s commentary is an essential explanation of the Tanakh and resides in a place of honor on the page of almost all editions of the Tanakh. Over 300 supercommentaries have been written to further explain Rashi’s comments on the Torah. While quoting many midrashim and Talmudic passages, Rashi, in his commentary, states that his purpose is to present the pshat (contextual meaning) of the text.
אך. כָּל אַכִין וְרַקִּין שֶׁבַּתּוֹרָה מִעוּטִים — מְכַפֵּר הוּא לַשָּׁבִים וְאֵינוֹ מְכַפֵּר עַל שֶׁאֵינָם שָׁבִים:
Indeed. Every time “however” and “indeed (except),” [are mentioned] in the Torah [they represent] a limitation. [Here, the limitation is this:] [Yom Kippur] atones for those who repent, but does not atone for those who do not repent.
Chizkuni is the commentary on the Torah of Rabbi Hezekiah ben Manoah, composed in mid-13th century in France. It is actually a compilation of insights culled from the Midrashim, as well as the writings of twenty other Rishonim, including Rashi, Rashbam and Ibn Ezra. However, Chizkuni does not name any of his sources (other than Rashi), in order to encourage objective study, as he felt that one should focus on the message rather than the messenger.
For every person (soul) that does not afflict itself: we have heard the warning previously; now we hear the penalty for disobedience, what is it? ונכרתה, “it will be cut off from the future of its people.” (Sifra)
ועניתם את נפשתיכם בתשעה לחדש דרשו רבותינו וכי בתשעה לחודש מתענים וכו׳ ואין לדרוש כן גבי מצות אע״ג דכתיב בהן בערב תאכלו מצות משום דהכא ענוי כי כתיב, גבי תשעה כתיב.
You are to afflict yourselves on the ninth of the month in the evening: our sages query how it is that we have to afflict ourselves on the day before the Day of Atonement, when the date set by the Torah for that day it the tenth? They conclude that what is meant here is that by eating and drinking on the day prior to the Day of Atonement we can fulfill the “festive” aspect of that day, which is after all part of the list of festivals. (Talmud Rosh Hashana, folio 9) they go as far as to state that treating the ninth day of that month as a festival, is equivalent to having afflicted oneself with total abstention from food and drink on the tent of that month...
a proclamation of holiness there is to be for you:
you are to afflict your selves,
any-kind of work you are not to do! You are to bring near an offering-up for YHWH, as a soothing savor:
one bull, a young of the herd, one ram,
lambs a year in age seven,
wholly-sound shall they be for you; and their grain-gift, flour mixed with oil:
three tenth-measures per bull,
two tenth-measures per [each] one ram, a tenth, a tenth-measure per [each] one lamb,
for the seven lambs, one hairy goat for a hattat-offering, aside from the Hattat- offering of Atonement,
and the regular offering-up, its grain-gift, and their poured-offerings.
Tractate Yoma (“The Day,” referring to Yom Kippur) was written c.190 - c.230 CE and is part of the Mishna. It consists of eight chapters; the first seven discuss the preparation for and service of the High Priest in the Temple on Yom Kippur day. The last chapter discusses the laws of fasting, other prohibitions of Yom Kippur, and the process of repentance.
יוֹם הַכִּפּוּרִים אָסוּר בַּאֲכִילָה וּבִשְׁתִיָּה וּבִרְחִיצָה וּבְסִיכָה וּבִנְעִילַת הַסַּנְדָּל וּבְתַשְׁמִישׁ הַמִּטָּה. וְהַמֶּלֶךְ וְהַכַּלָּה יִרְחֲצוּ אֶת פְּנֵיהֶם, וְהֶחָיָה תִנְעֹל אֶת הַסַּנְדָּל, דִּבְרֵי רַבִּי אֱלִיעֶזֶר, וַחֲכָמִים אוֹסְרִין:
On Yom Kippur, the day on which there is a mitzva by Torah law to afflict oneself, it is prohibited to engage in eating and in drinking, and in bathing, and in smearing oil on one’s body, and in wearing shoes, and in conjugal relations. However, the king, in deference to his eminence, and a new bride within thirty days of her marriage, who wishes to look especially attractive at the beginning of her relationship with her husband, may wash their faces on Yom Kippur. A woman after childbirth, who is suffering, may wear shoes because going barefoot causes her pain. This is the statement of Rabbi Eliezer. The Rabbis prohibit these activities for a king, a new bride, and a woman after childbirth.
(ח) חטאת ואשם ודאי מכפרין. מיתה ויום הכפורים מכפרין עם התשובה. התשובה מכפרת על עברות קלות על עשה ועל לא תעשה. ועל החמורות היא תולה עד שיבוא יום הכפורים ויכפר.
(ט) האומר, אחטא ואשוב, אחטא ואשוב, אין מספיקין בידו לעשות תשובה. אחטא ויום הכפורים מכפר, אין יום הכפורים מכפר. עברות שבין אדם למקום, יום הכפורים מכפר. עברות שבין אדם לחברו, אין יום הכפורים מכפר, עד שירצה את חברו. את זו דרש רבי אלעזר בן עזריה, [ויקרא טז:ל] "מכל חטאתיכם לפני ה' תטהרו," עברות שבין אדם למקום, יום הכפורים מכפר; עברות שבין אדם לחברו, אין יום הכפורים מכפר, עד שירצה את חברו
A sin-offering, which atones for unwitting performance of transgressions punishable by karet, and a definite guilt-offering, which is brought for robbery and misuse of consecrated items, atone for those sins. Death and Yom Kippur atone for sins when accompanied by repentance. Repentance itself atones for minor transgressions, for both positive mitzvot and negative mitzvot. And repentance places punishment for severe transgressions in abeyance until Yom Kippur comes and completely atones for the transgression.
With regard to one who says: I will sin and then I will repent, I will sin and I will repent, Heaven does not provide him the opportunity to repent, and he will remain a sinner all his days. With regard to one who says: I will sin and Yom Kippur will atone for my sins, Yom Kippur does not atone for his sins. Furthermore, for transgressions between a person and God, Yom Kippur atones; however, for transgressions between a person and another, Yom Kippur does not atone until he appeases the other person.
Tractate Shevuot (“Oaths”) was written c.450 - c.550 CE and is part of the Talmud. Its first two chapters discuss the sacrifices brought to atone for entering the Temple or eating from a sacrifice while impure. The remaining six chapters discuss different types of oaths, like those taken by litigants in court or a false promise made by an individual.
רבי אומר על כל עבירות שבתורה בין עשה תשובה בין לא עשה תשובה יום הכפורים מכפר חוץ מפורק עול ומגלה פנים בתורה ומפר ברית בבשר שאם עשה תשובה יום הכפורים מכפר ואם לאו אין יום הכפורים מכפר
Rabbi Yehuda HaNasi says: For all transgressions that are stated in the Torah, whether one repented, or whether one did not repent, Yom Kippur atones, except for one who divests himself of the yoke of Heaven, by denying God’s existence, and one who reveals facets of the Torah that differ from its true meaning, and one who nullifies the covenant of circumcision of the flesh. For these, if one repented, Yom Kippur atones, and if not, Yom Kippur does not atone.
Tractate Taanit (“Fast”) was written c.450 - c.550 CE and is part of theTalmud. Its four chapters discuss laws and stories relating to fast days, with a focus on fast days enacted by Jewish courts in times of drought. The tractate also discusses praying for rain, the fast days of the 17th of Tamuz and Tisha B’Av, and the concept of ma’amadot, in which groups of laypeople witnessed sacrifices in the Temple or gathered to read Torah, pray, and fast while sacrifices were being offered.
Rabbi Shimon ben Gamliel said, "Never were there days as good for Israel as the Fifteenth of Av and Yom Kippur": It is fine with Yom Kippur, since it has forgiveness and pardoning upon it - it is the day upon which the second set of tablets were given.