The Salvation Army (TSA) is a Protestant Christian church and an international charitable organization headquartered in London, England. It is aligned with the Wesleyan-Holiness movement. The organization reports a worldwide membership of over 1.7 million, consisting of soldiers, officers, and adherents who are collectively known as salvationists. Its founders sought to bring salvation to the poor, destitute, and hungry by meeting both their "physical and spiritual needs". It is present in 133 countries, running charity shops, operating shelters for the homeless, and disaster relief and humanitarian aid to developing countries.

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.