The Alliance World Fellowship or Christian and Missionary Alliance (The Alliance, also C&MA and CMA) is an international evangelical Protestant Christian denomination within the Higher Life movement of Christianity, teaching a modified form of Keswickian theology. The headquarters is in Reynoldsburg, Ohio, United States.
The Alliance has its origins in two organizations founded by Albert Benjamin Simpson in 1887 in Old Orchard Beach, Maine, in the United States, The Christian Alliance, which concentrated on domestic missions, and The Evangelical Missionary Alliance, which focused on overseas missions. These two organizations merged in 1897 to form the Christian and Missionary Alliance.
In 1887, in a series of sermons called The Fourfold Gospel in New York, United States, which will characterize his teaching, Simpson summarizes the Gospel in four aspects; Jesus Christ Savior, Sanctifier, Healer and Soon Coming King.
The Missionary Training Institute (later including Alliance Theological Seminary), founded in 1882 by Simpson in Nyack, near New York, contributed to the development of the union. In the 21st century, the school moved again to New York City and changed its name to Alliance University. After losing their accredation, Alliance University ceased operations in 2023, with its records transferred to Houghton College.
A.B. Simpson was influenced by Keswickian cleric W.E. Boardman in his view of sanctification. During the start of the 20th century, Simpson became closely involved with the growing Pentecostal movement. It became common for Pentecostal pastors and missionaries to receive their training at the Missionary Training Institute that Simpson founded. Consequently, Simpson and the Alliance had a great influence on Pentecostalism, in particular the Assemblies of God and the International Church of the Foursquare Gospel. This influence included evangelical emphasis, Alliance doctrine, Simpson's hymns and books, and the use of the term 'Gospel Tabernacle,' which led to many Pentecostal churches being known as 'Full Gospel Tabernacles.