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.)
Secularism in Israel
Masorti/Traditional Jews make up 30.5% of the Jewish population in Israel. This is the second largest group. Many of these "traditional Jews" differ from the Orthodox only because they will drive their cars on the Sabbath, use electricity, watch television, or go to a soccer game or the beach, frequently after attending religious services in the morning and the evening before. Many of the men wrap tefillin every morning, others cover the spectrum of observance. What is critical is that all are committed to a major religious component in the definition of their Jewishness and the Jewishness of the Jewish state. Traditional Jews make up most of the Likud political party.