Judaism
Around the 1st century CE, there were several small Jewish sects: the Pharisees, Sadducees, Zealots, Essenes, and Christians. After the destruction of the Second Temple in 70 CE, these sects vanished. Christianity survived, but by breaking with Judaism and becoming a separate religion; the Pharisees survived but in the form of Rabbinic Judaism (today, known simply as "Judaism"). The Sadducees rejected the divine inspiration of the Prophets and the Writings, relying only on the Torah as divinely inspired. Consequently, a number of other core tenets of the Pharisees' belief system (which became the basis for modern Judaism), were also dismissed by the Sadducees. (The Samaritans practiced a similar religion, which is traditionally considered separate from Judaism.)
Religion in Israel
Israel does not have a constitution. While the Basic Laws of Israel that serve in place of a constitution define the country as a "Jewish state", these Basic Laws, coupled with Knesset statutes, decisions of the Supreme Court of Israel, and various elements of the common law current in Israel, offer some protection for free practice of religion in the country. Pew Research Center has identified Israel as one of the countries that places "high" restrictions on religion, and there have been limits placed on non-Orthodox streams of Judaism. Legal accommodation of the non-Jewish communities follows the pattern and practice of the Ottoman and British administrations, with some important modifications. Israeli law officially recognizes five religions, all belonging to the Abrahamic family of religions: Judaism, Christianity, Islam, Druzeism, and the Bahá'í Faith. Furthermore, the law formally recognizes ten separate sects of Christianity: the Roman, Armenian, Maronite, Greek, Syriac, and Chaldean Catholic Churches; the Eastern Orthodox Greek Orthodox Church; the Oriental Orthodox Syriac Orthodox Church; the Armenian Apostolic Church; and Anglicanism.
Relations among religious groups—between Jews and non-Jews, between Muslims and Christians, and among the different streams of Judaism, such as Orthodox, Reform and Conservative—are often strained.