The Unitarian Church condemned Sabbatarianism as innovation (forbidden by the Transylvanian law on religious toleration) in 1618. The last Sabbatarian congregation in Transylvania disappeared in the 19th century and the remaining Sabbatarians, who were known as "Somrei Sabat" (the Hungarian transliteration of the Hebrew words for "Sabbath observers") joined the existing Jewish communities, into which they were eventually absorbed. Sabbatarianism also expanded into Russia, where its adherents were called Subbotniks, and, from there, the movement expanded into other countries. Some of the Russian Subbotniks maintained a Christian identity doctrinally, while others formally converted to Judaism and assimilated within the Jewish communities of Russia. Some of the latter, however, who had become Jewish, although they and their descendants practiced Judaism and had not practiced Christianity for nearly two centuries, still retained a distinct identity as ethnic Russian converts to Judaism until later.