The Churches of Christ in Christian Union became a separate denomination in 1909 when five ministers and about 60 lay people were separated from the steadily declining
Christian Union headquartered in Ohio. While the Christian Union was originally formed in 1864 to protest the
Methodist Episcopal Church's support of the
American Civil War, the CCCU was forged by a dispute over doctrine in 1909. Those holding to a
Wesleyan view on
sanctification were censured by the leadership of the South Ohio Conference of the Christian Union during a period of time in which many other
Holiness movement supporters were at loggerheads within established denominations. Adherents of Holiness movement teachings contended that Christian Union was dedicated to unity on a few basic principles and should have been able to tolerate Holiness beliefs within its ranks as a matter of Christian liberty. Opponents of the Holiness teaching, however, saw it as a divisive movement that contradicted the Christian Union’s central commitment to harmony. In the Christian Union's development from Methodist dissenters to a Restorationist denomination, it picked up many
Presbyterian traits. The leadership of the Christian Union did not see things through the
Wesleyan-Arminian theological prism but through a more
Calvinist lens and, therefore, a non-Holiness perspective. When the national organization of the Christian Union decided the censured members could only remain as part of the South Ohio Annual Conference, the members of the new group found themselves without a denominational home and thus pursued an independent course. The new organization was established under the leadership of
James H. McKibban on September 20, 1909, and set up headquarters at
Washington Court House, Ohio. By 1915, 40 churches belonged to CCCU. The number of churches increased to 60 by 1925. Most of the Churches of Christ in Christian Union's activities, including camp meetings, new church plants, and evangelistic campaigns, focused on Ohio, although revivals were held in Tennessee and New York. In 1952, the like-minded
Reformed Methodist Church (which had split from the Methodist Episcopal Church in 1813) merged with the CCCU to form its Northeast District. As common among many Wesleyan-Holiness bodies of the time, the CCCU called for the suffrage of women, the end to secret societies, and abstinence from alcohol and tobacco products. The organization also formed institutions of higher education, including Circleville Bible College (now
Ohio Christian University), which opened in 1948 in
Circleville, Ohio. ==Doctrine and polity==