Almost from the very beginning, Christians referred to the Church as the "One, Holy, Catholic [from the Greek καθολική, or universal] and Apostolic Church". Today, in addition to the Orthodox Church, a number of other Christian churches lay claim to this title (including the Roman Catholic Church, the Anglican Communion, the Assyrian Church and the Oriental Orthodox Church); however, the Orthodox Church considers these other churches to be schismatic and, in some cases, heretical. In the Orthodox view, the Assyrians and Orientals left the Orthodox Church in the first few centuries after Christ, and the Roman Catholics became the largest group to do so, as the result of the East-West Schism, traditionally dated in 1054.