Presbyterian Church in America in the context of "Presbyterian Church (USA)"

Protestant theology refers to the doctrines held by various Protestant traditions, which share some things in common but differ in others. In general, Protestant theology, as a subset of Christian theology, holds to faith in the Christian Bible, the Holy Trinity, salvation, sanctification, charity, evangelism, and the four last things.

Various Protestant denominations differ in their doctrine, with churches teaching either Wesleyan-Arminian theology, Reformed theology, or Baptist theology. Other evangelical bodies, such as the Lutheran Church–Missouri Synod, Presbyterian Church in America and the Evangelical Friends Church International may subscribe to what they see as the orthodox theology espoused by their historic tradition, such as Lutheranism, Presbyterianism or Quakerism respectively.

The Presbyterian Church (USA), abbreviated PCUSA, is a mainline Protestant denomination in the United States. It is the largest Presbyterian denomination in the United States. Its theological roots lie primarily in the Scottish Reformation, particularly going back to the reforms done by the Calvinist reformer and minister John Knox of Scotland. Now known for its generally liberal stance on doctrine, The Presbyterian Church (USA) was established with the 1983 merger of the Presbyterian Church in the United States, whose churches were located in the Southern and border states, with the United Presbyterian Church in the United States of America, whose congregations could be found in every state.

The church maintains a Book of Confessions, a collection of historic and contemporary creeds and catechisms, including its own Brief Statement of Faith. It is a member of the World Communion of Reformed Churches. The similarly named Presbyterian Church in America (PCA) is a separate denomination whose congregations can also trace their history to the various schisms and mergers of Presbyterian churches in the United States. Unlike the more conservative Presbyterian Church in America, the Presbyterian Church (USA) supports the ordination of women and affirms same-sex marriages. It also welcomes practicing gay and lesbian persons to serve in leadership positions as ministers, deacons, elders, and trustees.

The fundamentalist–modernist controversy is a major schism that originated in the 1920s and 1930s within the Presbyterian Church in the United States of America. At issue were foundational disputes about the role of Christianity; the authority of the Bible; and the death, resurrection, and atoning sacrifice of Jesus Christ. Two broad factions within Protestantism emerged: fundamentalists, who insisted upon the timeless validity of each doctrine of Christian orthodoxy; and modernists, who advocated a conscious adaptation of the Christian faith in response to the new scientific discoveries and moral pressures of the age. At first, the schism was limited to Reformed churches and centered around the Princeton Theological Seminary, whose fundamentalist faculty members founded Westminster Theological Seminary when Princeton went in a liberal direction. However, it soon spread, affecting nearly every Protestant denomination in the United States. Denominations that were not initially affected, such as the Lutheran churches, eventually were embroiled in the controversy, leading to a schism in the United States.

By the end of the 1930s, proponents of theological liberalism had, at the time, effectively won the debate, with the modernists in control of all mainline Protestant seminaries, publishing houses, and denominational hierarchies in the United States. More conservative Christians withdrew from the mainstream, founding their own publishing houses (such as Zondervan), universities (such as Biola University), and seminaries (such as Dallas Theological Seminary and Fuller Theological Seminary). This would remain the state of affairs until the 1970s, when conservative Protestantism emerged on a larger scale in the United States, resulting in the rise of conservatism among the Southern Baptists, Presbyterians, and others.