The formal name of this organization founded by the Rev. Sun Myung Moon is the Holy Spirit Association for the Unification of World Christianity, but Unification Church is acceptable in all references. Moon launched it in 1954 in South Korea, six years after the Presbyterian Church of Korea excommunicated him for beliefs it said were incompatible with traditional Christianity. Among other beliefs, followers reject the Trinity, saying instead that God is a single being with male and female aspects. Members are often called Moonies, but the term is considered derogatory; they call themselves Unificationists. Use Moonies only in direct quotes.