Frankism, a Jewish religious movement of the 18th and 19th centuries, centered on the leadership of the Jewish Messiah claimant Jacob Frank, who lived from 1726 to 1791. At its height it claimed perhaps 500,000 followers, primarily Jews living in Poland and other parts of Eastern Europe.
Unlike traditional Judaism, which provides a set of detailed guidelines called halakha that are scrupulously followed by observant Jews and regulate many aspects of life, Frank claimed that "all laws and teachings will fall" and following antinomianism asserted that one's most important personal obligation of every person was the transgression of every boundary.
Frankism is commonly associated[by whom?] with Sabbateanism, a religious movement that formed around the identification of the 17th-century Jewish rabbi Sabbatai Zevi as the Jewish messiah. Like Frankism, the earlier forms of Sabbateanism believed that at least in some circumstances, antinomianism was the correct path. Zevi himself would perform actions that violated traditional Jewish taboos, such as eating fats that were forbidden by Jewish dietary laws and celebrating former fast days as feast days. Especially after Zevi's death, a number of branches of Sabbateanism evolved, which disagreed among themselves over which aspects of traditional Judaism should be preserved and which discarded.  The more radical branches even engaged in orgies. In Frankism, orgies featured prominently in ritual. Frank was taught how to use the Kundalini in magical rituals by agents of the Holy Roman Emperor.
Several authorities on Sabbateanism, including Heinrich Graetz and Aleksander Kraushar, were skeptical of the existence of such a thing as a distinctive "Frankist" doctrine. According to Gershom Scholem, another authority on Sabbateanism, Kraushar had described Frank's sayings as "grotesque, comical and incomprehensible". In his classic essay "Redemption Through Sin", Scholem argued a different position, seeing Frankism as a later and more radical outgrowth of Sabbateanism. In contrast, Jay Michaelson argues that Frankism was "an original theology that was innovative, if sinister" and was in many respects a departure from the earlier formulations of Sabbateanism. In traditional Sabbatean doctrine, Zevi and often his followers claimed to be able to liberate the sparks of holiness hidden within what seemed to be evil. According to Michaelson, Frank's theology asserted that the attempt to liberate the sparks of holiness was the problem, not the solution. Rather, Frank claimed that the mixing between holy and unholy was virtuous. Netanel Lederberg claims that Frank had a Gnostic philosophy wherein there was a "true God" whose existence was hidden by a "false God". This "true God" could allegedly only be revealed through a total destruction of the social and religious structures created by the "false God", thus leading to a thorough antinomianism. For Frank, the very distinction between good and evil is a product of a world governed by the "false God". Lederberg compares Frank's position to that of Friedrich Nietzsche.
After Jacob Frank
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- Judaism 101: What is Halakhah?
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- MyJewishLearning.com page on Kabbalah
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- Some in emulation of Zevi—in 1666."Redemption Through Sin" by Gershom Scholem. In The Messianic Idea in Judaism and Other Essays, pp. 78–141.
- Why I Study Sabbateanism, by Jay Michaelson. ZEEK: A Jewish Journal of Thought and Culture, June 07.
- "Redemption Through Sin" by Gershom Scholem. In The Messianic Idea in Judaism and Other Essays, pp. 78–141.
- Lederberg, Netanel (2007). Sod HaDa'at: Rabbi Israel Ba'al Shem Tov, His Spiritual Character and Social Leadership. Jerusalem,Israel: Rubin Mass. ISBN 978-965-09-0206-3.
- Frank, Yakov (1978). Sayings of Yakov Frank. Harris Lenowitz (trans.). Oakland, CA: Tzaddikim. ISBN 0-917246-05-5.
- Maciejko, Pawel (2011). The Mixed Multitude:Jacob Frank and the Frankist Movement. Philadelphia, PA: University of Pennsylvania Press. ISBN 978-0-8122-4315-4.
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- Scholem, Gershom. "‘Shabtai Zvi’ and ‘Jacob Frank and the Frankists’". Encyclopaedia Judaica (CD-ROM ed.). Retrieved 2009-05-13.
- Emeliantseva, Ekaterina, "Zwischen jüdischer Tradition und frankistischer Mystik. Zur Geschichte der Prager Frankistenfamilie Wehle: 1760–1800," Jewish History Quarterly/Kwartalnik Historii Żydów 4 (2001), pp. 549–565.
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- Emeliantseva Koller, Ekaterina, "Situative Religiosität – situative Identität: Neue Zugänge zur Geschichte des Frankismus in Prag (1750–1860)," in: P. Ernst, G. Lamprecht (eds.), Konzeptionen des Jüdischen – Kollektive Entwürfe im Wandel (= Schriften des Centrums für Jüdische Studien 11), Innsbruck 2009, pp. 38–62.