Fast of the Firstborn tends to precipitate contrition in the one who fasts (see Joel, 2:12–18). This is why the Bible requires fasting (lit. self-affliction) on Yom Kippur (Jewish holiday of atonement) (see Leviticus, 23:27,29,32; Numbers, 29:7; Tractate "Yoma", 8:1; ibid. Babylonian Talmud, 81a). Because, according to the Hebrew Bible, hardship and calamitous circumstances can occur as a result of wrongdoing (see, for example, Leviticus 26:14–41), fasting is often undertaken by the community or by individuals to achieve atonement and avert catastrophe (see, for example, Esther 4:3,16; Jonah 3:7). Most of the Talmud's Tractate "Ta'anit" ("Fast[s]") is dedicated to the protocol involved in declaring
Atonement in Judaism Atonement in Judaism Atonement in Judaism is the process of causing a transgression to be forgiven or pardoned. In Rabbinic Judaism, atonement is achieved through repentance, which can be followed by some combination of the following: Which of these additions are required varies according to the severity of the sin, whether it was done willfully, in error, or under duress, whether it was against God alone or also against a fellow person, and whether the Temple service and ordained law courts are in existence or not. Repentance is needed in all cases of willful sin, and restitution is always required