The Church of God , also called the Church of God Ministries, is an international holiness Christian denomination with roots in Wesleyan-Arminianism and also in the restorationist traditions. The organization grew out of the evangelistic efforts of several Holiness evangelists in Indiana and Michigan in the early 1880s, most notably Daniel Sidney Warner.

The Holiness movement is a Christian movement that emerged chiefly within 19th-century Methodism, and to a lesser extent influenced other traditions such as Quakerism, Anabaptism, and Restorationism. The movement is historically distinguished by its emphasis on the doctrine of a second work of grace, which is called entire sanctification or Christian perfection. Churches aligned with the holiness movement additionally teach that the Christian life should be free of sin. For the Holiness movement, "the term 'perfection' signifies completeness of Christian character; its freedom from all sin, and possession of all the graces of the Spirit, complete in kind." A number of evangelical Christian denominations, parachurch organizations, and movements emphasize those beliefs as central doctrine.