Early in the 20th century,
American Jews were striving primarily for social and economic advancement, often leaving their religious observances behind. Because most jobs required working on Saturdays, observance of the Jewish
Sabbath was rare, as were many other traditions. loaned his law office to the organization.
Seminars The group developed a Friday night (Sabbath) lecture series in 1912, given in English. Judah Magnes delivered the inaugural address, attended by thousands. According to Bunim, Friedlander and Kaplan were affiliates of the Conservative
Jewish Theological Seminary and the
Conservative Judaism movement, and they sought to use Young Israel to establish a youth platform for the Conservative movement; until the end of World War I, Young Israel had two groups, the firmly Orthodox, and the more liberal group that worked with the Conservatives.
Synagogues The first Young Israel synagogue was established in 1913 on
East Broadway, on Manhattan's
Lower East Side. David Warshaw traces the origins of the new synagogue to the summer of 1913, when some members of the YI seminar group were asked into a storefront
shul [synagogue] at 205 East Broadway, to complete a
minyan. Much to their delight, the shul allowed the new young members to lead services at least once each month. As they led the services, the Young Israel members introduced some small stylistic changes, that were acceptable to the Orthodox wing and would make the service more palatable to the Young Israel congregants. The changes included singing many parts of the prayer service, and the distribution of worship honors equally, where they had traditionally gone to established, wealthy congregants who could pay for them. Though the shul predated its Young Israel members, within months, they had attracted so many new young members, that they outgrew the store and moved to the
Educational Alliance building. The young people had taken over the shul, itself a novel experience. However, it was not directly linked to the Young Israel lecture series, only sharing a common group of leaders, and the common idea of refreshing Orthodoxy for younger Jews. Recognizing its potential for young Jews everywhere, they named themselves "The Model Synagogue Organization." However, they recognized the synergy with the forums, and renamed the shul Young Israel. gave it rights to proceeds of a sale by a failing branch of assets, with these funds benefitting the community or other branches. In 2021 a vote was made to nullify this provision.{{cite web |website=eJewishPhilanthropy.com
Growth By 1925, Young Israel was extending into social services, and formed a support agency for Sabbath-observant employment that included job placement and vocational training. Later in the decade, the synagogue network grew to about 25. The central organization developed a Wall Street office with a full-time staff. The office began publishing material regularly for branches and Young Israel members. A few years later, branches starting opening outside of New York. By 1935, there were branches in New York, New England, Chicago, and elsewhere in the Midwest, Canada, and Israel. ==3 West 16th Street==