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
Blood atonement taught that in a complete theocracy the Lord could require the voluntary shedding of a murderer's blood-presumably by capital punishment-as part of the process of Atonement for such grievous sin. This was referred to as "blood Atonement." Since such a theocracy has not been operative in modern times, the practical effect of the idea was its use as a rhetorical device to heighten the awareness of Latter-day Saints of the seriousness of murder and other major sins. This view is not a doctrine of the Church and has never been practiced by the Church at any time. Joseph Fielding Smith