Judaism
Christianity was originally a sect of Second Temple Judaism, but the two religions diverged in the first century. The differences between Christianity and Judaism originally centered on whether Jesus was the Jewish Messiah but eventually became irreconcilable. Major differences between the two faiths include the nature of the Messiah, of atonement and sin, the status of God's commandments to Israel, and perhaps most significantly of the nature of God himself. Due to these differences, Judaism traditionally regards Christianity as Shituf or worship of the God of Israel which is not monotheistic. Christianity has traditionally regarded Judaism as obsolete with the invention of Christianity and Jews as a people replaced by the Church, though a Christian belief in dual-covenant theology emerged as a phenomenon following Christian reflection on how their theology influenced the Nazi Holocaust.
Union for Reform Judaism
The URJ, which was named the "Union of American Hebrew Congregations" until 7 November 2003, incorporates 846 congregations in the United States and 27 in Canada. The Union consists of four administrative districts, West, East, South and Central, which in turn are divided into a total of 35 regional communities, comprising groups of local congregations; 34 are in the United States and one represents all those affiliated with the Canadian Council for Reform Judaism.
The URJ is led by a board of trustees, consisting 253 lay members. This board is overseen by the 5,000-member General Assembly, which convenes biennially. It was first assembled in Cleveland on 14 July 1874, and the most recent biennial was held in Boston on 5 - 10 December 2017. The board directs the Senior Leadership Team, headed by the URJ President. Spiritual guidance is provided by the Central Conference of American Rabbis, which has some 2,300 clergy members who convene annually. Most CCAR members have been trained at Hebrew Union College-Jewish Institute of Religion, the Reform movement's seminary. The CCAR has a publishing arm and oversees various committees, such as those focusing on Ritual, Responsa,and Prayerbooks. Synagogue prayers are conducted mainly by members of the CCAR and of the American Conference of Cantors. The political and legislative outreach of the URJ is performed by the Religious Action Center based in Washington D.C. The RAC advocates policy positions based upon religious values, and is associated with political progressivism, as part of the vision for "Tikkun Olam". The denomination is also supported by the Women of Reform Judaism (formerly, the National Federation of Temple Sisterhoods).