Reform Judaism
The World Union

In Germany, Liberal communities stagnated since mid-century. Full and complete Jewish emancipation granted to all in the German Empire in 1871 largely diffused interest in harmonizing religion with Zeitgeist. Immigration from Eastern Europe also strengthened traditional elements. In 1898, seeking to counter these trends, Rabbi Heinemann Vogelstein established the Union of Liberal Rabbis (Vereinigung der liberalen Rabbiner). It numbered 37 members at first and grew to include 72 by 1914, about half of Germany's Jewish clergy, a proportion maintained until 1933. In 1908, Vogelstein and Rabbi Cäsar Seligmann also founded a congregational arm, the Union for Liberal Judaism in Germany (Vereinigung für das Liberale Judentum in Deutschland), finally institutionalizing the current that until then was active as a loose tendency. The Union had some 10,000 registered members in the 1920s. In 1912, Seligmann drafted a declaration of principles, "Guiding Lines towards a Program for Liberal Judaism" (Richtlinien zu einem Programm für das liberale Judentum). It stressed the importance of individual consciousness and the supremacy of ethical values to ritual practice, declared a belief in a messianic age and was adopted as "a recommendation", rather than a binding decision.

In 1902, Claude Montefiore and several friends, including Lily Montagu and Israel Abrahams, founded the Jewish Religious Union (JRU) in London. It served as the cornerstone of Liberal Judaism in Britain. Montefiore was greatly influenced by the ideas of early German Reformers. He and his associates were mainly driven by the example and challenge of Unitarianism, which offered upper-class Jews a universal, enlightened belief. Meyer noted that while he had original strains, Montefiore was largely dependent on Geiger and his concepts of progressive revelation, instrumentality of ritual et cetera. His Liberal Judaism was radical and puristic, matching and sometimes exceeding the Berlin and American variants. They sharply abridged liturgy and largely discarded practice. Langton has argued for the distinctly Anglo-Jewish character of the movement, which was dominated by Montefiore's idiosyncratic ideas. In 1907, the former Consistorial rabbi Louis Germain Lévy who shared a similar worldview, formed the Union Libérale Israélite de France, a small congregation that numbered barely a hundred families. It eventually evolved into the Liberal Jewish Movement of France.

Seligmann first suggested the creation of an international organization. On 10 July 1926, representatives from around the world gathered in London. Rabbi Jacob K. Shankman wrote they were all "animated by the convictions of Reform Judaism: emphasized the Prophets' teachings as the cardinal element, progressive revelation, willingness to adapt ancient forms to contemporary needs". The conference was attended by representatives of the German Liberal Union, the British JRU, the American UAHC and CCAR, and Lévy from France. After weighing their options, they chose "Progressive", rather than either "Liberal" or "Reform", as their name, founding the World Union for Progressive Judaism. It began to sponsor new chapters globally. The first was founded in the Netherlands, where two synagogues formed the Verbond voor Liberaal-Religieuze Joden in Nederland on 18 October 1931.

Already in 1930, the West London Synagogue affiliated with WUPJ. In the coming decade, waves of refugees from Nazi Germany arrived in Britain, bringing with them both the moderation of German Liberal Judaism (few mingled with the radical JRU) and a cadre of trained rabbis. Only then did British Reform emerge as a movement. 1942 saw the founding of the Associated British Synagogues, which joined the WUPJ in 1945. Preserving the relative traditionalism of Germany, they later adopted the name "Reform Synagogues of Great Britain" (since 2005, Movement for Reform Judaism), distinct from the smaller " Union of Liberal and Progressive Synagogues ", which succeeded the JRU. Tens of thousands of refugees from Germany brought their Liberal Judaism to other lands as well. In 1930, the first Liberal congregation, Temple Beth Israel Melbourne, was founded in Australia. In June 1931, the South African Jewish Religious Union for Liberal Judaism was organised, soon employing HUC-ordained Moses Cyrus Weiler. The Congregação Israelita Paulista of São Paulo, first branch in South America, was established in 1936. German refugees also founded a Liberal community named Emet ve-Emuna in Jerusalem, but it joined the Conservatives by 1949.
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