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Importance of Day of Atonement in Old Testament Judaism

The Day of Atonement, observed on the tenth day of the seventh month (Tisri), was the most solemn day in the Israelite calendar [10, 11]. It functioned as a national day of humiliation and expiation, serving as the only fast commanded in the Mosaic law [1, 3, 6]. The primary purpose of the day was to cleanse the people from all their sins so they could be clean before Yahweh [4].

The observance was characterized by strict requirements for both the community and the priesthood. The Israelites were commanded to "deny themselves" or "afflict their souls" through fasting [2, 12]. This day was observed as a high Sabbath, meaning all work was suspended for both natives and foreigners [5, 12]. Because of its gravity, only the high priest could officiate, as he alone could represent the entire community, including other priests [10, 13].

The ritual process involved several layers of atonement [5]:

Theological interpretations of these rites vary by tradition. Some scholars suggest that the standard sacrifices and purifications provided elsewhere in the law were insufficient to restore the "true vital fellowship" between the holy God and a nation inherently involved in sin [9]. Other traditions emphasize the necessity of human response, noting that the Day of Atonement effects atonement only for those who repent [14]. In Protestant academic and Reformed traditions, these rituals are often viewed as the theological foundation for the later atonement made by Jesus Christ [11].

The day concluded from sunset to sunset, occurring five days before the Feast of Tabernacles [1, 3]. It also served as the commencement date for the Year of Jubilee [5].

Sources

  1. Easton's Bible Dictionary “Easton's Bible Dictionary: Atonement, Day of — The great annual day of humiliation and expiation for the sins of the nation, "the fast" (Acts 27:9), and the only one commanded in the law of Moses. The mode of its observance is described in Lev. 16:3-10; 23:26-32; and Num. 29:7-11. It was kept on the tenth day of the month Tisri, i.e., five days before the feast of Tabernacles, and lasted from sunset to sunset. (See [41]AZAZEL.)”
  2. Leviticus “Leviticus 23:27 (LEB) — “Surely the Day of Atonement is on the tenth day of the seventh month; it shall be a holy assembly for you, and you shall deny yourselves, and you shall present an offering made by fire to Yahweh.”
  3. Smith's Bible Dictionary “Smith's Bible Dictionary: Atonement, The Day Of — I. The great day of national humiliation, and the only one commanded in the Mosaic law. [[215]Fasts] The mode of its observance is described in Levi 16, and the conduct of the people is emphatically enjoined in (Leviticus 23:26-32) II. Time.-- It was kept on the tenth day of Tisri, that is, from the evening of the ninth to the evening of the tenth of that month, five days before the feast of tabernacles. Tisri corresponds to our September-October, so that the 10th of Tisri would be about the first of October. [[216]Festivals] III. How observed.”
  4. Leviticus “for on this day shall atonement be made for you, to cleanse you; from all your sins you shall be clean before Yahweh. -- Leviticus 16:30”
  5. Torrey's Topical Textbook “Torrey's Topical Textbook: Atonement, the Day Of — Tenth day of seventh month -- Le 23:26,27. A day of humiliation -- Le 16:29,31; 23:27. Observed as a sabbath -- Le 23:28,32. Offerings to be made on -- Le 16:3,5-15. The high priest entered into the holy place on -- Le 16:2,3; Heb 9:7. Atonement made on For the holy place. -- Ex 30:10; Le 16:15,16. For the high priest. -- Le 16:11; Heb 9:7. For the whole congregation. -- Le 16:17,24; 23:28; Heb 9:7. The sins of the people borne off by the scapegoat on -- Le 16:21. Punishment for not observing -- Le 23:29,30. Year of Jubilee commenced on -- Le ”
  6. Easton's Bible Dictionary “Easton's Bible Dictionary: Fast — The sole fast required by the law of Moses was that of the great Day of Atonement (q.v.), Lev. 23:26-32. It is called "the fast" (Acts 27:9). The only other mention of a periodical fast in the Old Testament is in Zech. 7:1-7; 8:19, from which it appears that during their captivity the Jews observed four annual fasts. (1.) The fast of the fourth month, kept on the seventeenth day of Tammuz, the anniversary of the capture of Jerusalem by the Chaldeans; to commemorate also the incident recorded Ex. 32:19. (Comp. Jer. 52:6, 7.) (2.) The fast of the fifth month, ke”
  7. Smith's Bible Dictionary “Smith's Bible Dictionary: Goat, Scape — [[563]Atonement, The Day Of, [564]Day OF]”
  8. Easton's Bible Dictionary “Easton's Bible Dictionary: Sin-offering — (Heb. hattath), the law of, is given in detail in Lev. 4-6:13; 9:7-11, 22-24; 12:6-8; 15:2, 14, 25-30; 14:19, 31; Num. 6:10-14. On the day of Atonement it was made with special solemnity (Lev. 16:5, 11, 15). The blood was then carried into the holy of holies and sprinkled on the mercy-seat. Sin-offerings were also presented at the five annual festivals (Num. 28, 29), and on the occasion of the consecration of the priests (Ex. 29:10-14, 36). As each individual, even the most private member of the congregation, as well as the congregation at large, and t”
  9. Leviticus (Lutheran) “Keil & Delitzsch on Leviticus 16 (introduction): The Day of Atonement - Leviticus 16 The sacrifices and purifications enjoined thus far did not suffice to complete the reconciliation between the congregation of Israel, which was called to be a holy nation, but in its very nature was still altogether involved in sin and uncleanness, and Jehovah the Holy One-that is to say, to restore the perfect reconciliation and true vital fellowship of the nation with its God, in accordance with the idea and object of the old covenant - because, even with the most scrupulous observance of these directions, m”
  10. Leviticus (Protestant academic) “Tyndale House on Leviticus 16:1: 16:1-34 The Day of Atonement, the tenth day of the seventh month (see 16:29; 23:27; Num 29:7), was the most solemn day of the year for Israelites. It was the only required fast, and it was a Sabbath of rest for all the people (Lev 23:32). Introduced by the Festival of Trumpets (Num 29:1, 7-11), it was the day when the corporate sins of the community were atoned for. Only the high priest (Aaron) could officiate, because only he could represent all the people, including other priests (Aaron’s sons). The Day of Atonement is celebrated today as Yom Kippur.”
  11. Leviticus (Protestant academic) “Tyndale House on Leviticus 23:27: 23:27 The Day of Atonement was the most solemn day in the Israelite calendar and the only day of fasting (ch 16). The high priest made atonement for the corporate sin of the people, laying the theological foundation for the atonement made by Jesus Christ (Heb 9:11-12).”
  12. Leviticus (Lutheran) “Keil & Delitzsch on Leviticus 16:29: General directions for the yearly celebration of the day of atonement. - It was to be kept on the tenth day of the seventh month, as an "everlasting statute" (see at Exo 12:14). On that day the Israelites were to "afflict their souls," i.e., to fast, according to Lev 23:32, from the evening of the 9th till the evening of the 10th day. Every kind of work was to be suspended as on the Sabbath (Exo 20:10), by both natives and foreigners (see Exo 12:49), because this day was a high Sabbath (Exo 31:15). Both fasting and sabbatical rest are enjoined again in Lev ”
  13. Leviticus (Baptist/Reformed) “John Gill on Leviticus 16 (introduction): INTRODUCTION TO LEVITICUS 16 This chapter treats of the day of atonement, and of the rites, sacrifices, and services of it, directs when Aaron should come into the holy of holies, Lev 16:1; and in what habit he should then appear, and with what offerings both for himself, and for the people, Lev 16:3; and that having slain his own sin offering, and that for the people, he should offer incense before the mercy seat, and sprinkle that with the blood of both, Lev 16:11; and by these offerings make atonement for the holy place, the tabernacle of the cong”
  14. Sefaria (Jewish (Kabbalistic/Philosophical)) “Ramban (Nachmanides) on Leviticus 23:27: ACH’ (BUT) ON THE TENTH DAY OF THIS SEVENTH MONTH IS THE DAY OF ATONEMENT. “All expressions in the Torah of ach (but) and rak (only) indicate limiting qualifications, [and here the word ach indicates that the Day of Atonement] effects atonement ‘only’ for those who repent, but it does not effect atonement for those who do not repent.” This is Rashi’s language on the basis of the words of our Rabbis. 375 Shebuoth 13 a. And if so, the explanation of the verse is that on the first day of this month [Tishri] there will be for all of you a day of memorial of”
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