This scholarly communication presents a theological debate within Conservative Judaism regarding religious authority and pluralism in Israel. The primary discourse centers on Rabbi Gilbert Kollin's controversial proposal for establishing a joint Conservative-Reform rabbinical court in Israel to address matters of marriage, divorce, and conversion. Through a methodological analysis of rabbinic correspondence published in *Conservative Judaism* (Vol. 28, No. 2, 1974), this study examines the fundamental tensions between Orthodox, Conservative, and Reform interpretations of Jewish law and identity. The findings reveal irreconcilable theological differences regarding divine sanction for Halakhah, with Orthodox authorities maintaining exclusive legitimacy while non-Orthodox movements advocate for religious pluralism. Rabbi Nathan Barack's response emphasizes traditional halakhic processes and warns against denominational fragmentation, while Kollin argues that Orthodox-Conservative unity remains impossible due to incompatible belief systems. The research demonstrates that Israel's religious establishment's monopolistic approach conflicts with diaspora Jewish diversity, particularly affecting the largest diaspora community. The study concludes that meaningful religious cooperation requires acknowledgment of theological pluralism rather than attempts at artificial unification, highlighting the ongoing struggle between religious authenticity and institutional pragmatism in modern Jewish life.