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.)
LGBT-affirming denominations in Judaism
Lesbian, gay, bisexual, transgender (LGBT) affirming denominations in Judaism (also called gay-affirming) are Jewish religious groups that welcome LGBT members and do not consider homosexuality to be a sin. They include both entire Jewish denominations, as well as individual synagogues. Some are composed mainly of non-LGBT members and also have specific programs to welcome LGBT people, while others are composed mainly of LGBT members.