One true church

A number of Christian denominations assert that they alone represent the one true church – the church to which Jesus gave his authority in the Great Commission. The Roman Catholic Church, the Orthodox Church, the Oriental Orthodox communion and the Assyrian Church of the East each understands itself as the one and only original church. The Seventh-day Adventist Church regards itself to be the one true church in the sense of being a faithful remnant.

Similarly, a number of groups, such as The Church of Jesus Christ of Latter-day Saints (LDS Church), view apostolic succession as an essential element in constituting the one true church, ensuring it has inherited the spiritual, ecclesiastical and sacramental authority and responsibility that Jesus Christ gave to the Apostles. Other groups, such as Iglesia ni Cristo, believe in a last-messenger doctrine, where no such succession takes place. A few believe they have restored the original church, in belief or in practice.

The claim to be the "one true church" relates to the first of the Four Marks of the Church mentioned in the Nicene Creed: "one, holy, catholic, and apostolic church".

Mainstream Protestants regard all Christians as members of the Christian Church; this belief is sometimes referred to by the theological term, "invisible church".

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