Reformed Christianity, also called Calvinism, is a major branch of Protestantism that began during the sixteenth-century Protestant Reformation, a schism in the Western Church. In the modern day, it is largely represented by the Continental, Presbyterian, and Congregational traditions, as well as parts of the Anglican and Baptist traditions.
Unitarianism is a nontrinitarian branch of Christianity. Unitarian Christians affirm the unitary nature of God as the singular and unique creator of the universe, believe that Jesus Christ was inspired by God in his moral teachings and that he is the savior of humankind, but he is not equal to God himself.
Continental Reformed Protestantism is a part of the Reformed tradition within Protestantism that traces its origin in the continental Europe. Prominent subgroups are the Dutch Reformed, the Swiss Reformed, the French Huguenots, the Hungarian Reformed, and the Waldensian Church in Italy.
Heinrich Bullinger was a Swiss Reformer and theologian, the successor of Huldrych Zwingli as head of the Church of Zürich and a pastor at the Grossmünster. One of the most important leaders of the Swiss Reformation, Bullinger co-authored the Helvetic Confessions and collaborated with John Calvin to work out a Reformed doctrine of the Lord's Supper.
Lelio Francesco Maria Sozzini, or simply Lelio Sozzini, was an Italian Renaissance humanist and theologian, and, alongside his nephew Fausto Sozzini, founder of the Nontrinitarian Christian belief system known as Socinianism. His doctrine was developed among the Polish Brethren in the Polish Reformed Church between the 16th and 17th centuries, and embraced by the Unitarian Church of Transylvania during the same period.
Socinianism is a Nontrinitarian Christian belief system developed and co-founded during the Protestant Reformation by the Italian Renaissance humanists and theologians Lelio Sozzini and Fausto Sozzini, uncle and nephew, respectively.
A Christian denomination is a distinct religious body within Christianity that comprises all church congregations of the same kind, identifiable by traits such as a name, particular history, organization, leadership, theological doctrine, worship style and, sometimes, a founder. It is a secular and neutral term, generally used to denote any established Christian church. Unlike a cult or sect, a denomination is usually seen as part of the Christian religious mainstream. Most Christian denominations refer to themselves as churches, whereas some newer ones tend to interchangeably use the terms churches, assemblies, fellowships, etc. Divisions between one group and another are defined by authority and doctrine; issues such as the nature of Jesus, the authority of apostolic succession, biblical hermeneutics, theology, ecclesiology, eschatology, and papal primacy may separate one denomination from another. Groups of denominations—often sharing broadly similar beliefs, practices, and historical ties—are sometimes known as "branches of Christianity". These branches differ in many ways, especially through differences in practices and belief.
The Polish Brethren were members of the Minor Reformed Church of Poland, a Nontrinitarian Protestant church that existed in Poland from 1565 to 1658. By those on the outside, they were called "Arians" or "Socinians", but themselves preferred simply to be called "Brethren" or "Christians", and, after their expulsion from Poland, "Unitarians".
Fausto Paolo Sozzini, or simply Fausto Sozzini, was an Italian Renaissance humanist and theologian, and, alongside his uncle Lelio Sozzini, founder of the Nontrinitarian Christian belief system known as Socinianism. His doctrine was developed among the Polish Brethren in the Polish Reformed Church between the 16th and 17th centuries, and embraced by the Unitarian Church of Transylvania during the same period.
The Radical Reformation represented a response to perceived corruption both in the Catholic Church and in the expanding Magisterial Protestant movement led by Martin Luther and many others. Beginning in Germany and Switzerland in the 16th century, the Radical Reformation gave birth to many radical Protestant groups throughout Europe. The term covers Radical Reformers like Thomas Müntzer and Andreas Karlstadt, the Zwickau prophets, and Anabaptist groups like the Hutterites and the Mennonites.
Protestantism originated from the Protestant Reformation of the 16th century. The term Protestant comes from the Protestation at Speyer in 1529, where the nobility protested against enforcement of the Edict of Worms which subjected advocates of Lutheranism to forfeit all of their property. However, the theological underpinnings go back much further, as Protestant theologians of the time cited both Church Fathers and the Apostles to justify their choices and formulations. The earliest origin of Protestantism is controversial; with some Protestants today claiming origin back to people in the early church deemed heretical such as Jovinian and Vigilantius.
Reformed Christianity originated with the Reformation in Switzerland when Huldrych Zwingli began preaching what would become the first form of the Reformed doctrine in Zürich in 1519.
Unitarianism, as a Christian denominational family of churches, was first defined in Poland-Lithuania and Transylvania in the late 16th century. It was then further developed in England and America until the early 19th century, although theological ancestors are to be found as far back as the early days of Christianity. It matured and reached its classical form in the middle 19th century. Later historical development has been diverse in different countries.
The Magisterial Reformation refers to those protestants that during the Protestant Reformation collaborated with secular authorities, such as princes, magistrates, or city councils, i.e. "the magistracy". While the Radical Reformation rejected any secular authority over the church, the Magisterial Reformation argued for the interdependence of the church and secular authorities. As Alister McGrath put it "The magistrate had a right to authority within the church, just as the church could rely on the authority of the magistrate to enforce discipline, suppress heresy, or maintain order."
In 16th-century Christianity, Protestantism came to the forefront and marked a significant change in the Christian world.
The following outline is provided as an overview of and topical guide to Christianity:
Protestantism is a branch of Christianity that emphasizes justification of sinners through faith alone, the teaching that salvation comes by unmerited divine grace, the priesthood of all believers, and the Bible as the sole infallible source of authority for Christian faith and practice. The five solae summarize the basic theological beliefs of mainstream Protestantism.
The Protestant Reformation began in 1520s in the Italian states, although forms of pre-Protestantism were already present before the 16th century. The Reformation in Italy collapsed quickly at the beginning of the 17th century. Its development was hindered by the Inquisition and also popular disdain.
Brethren is a name adopted by a wide range of mainly Christian religious groups throughout history. The largest movement is Anabaptist.
Neo-Anabaptism is a Christian theological movement in the late twentieth and early twenty-first century inspired by classical Anabaptism. According to Stuart Murray, neo-Anabaptists "identify with the Anabaptist tradition and are happy to be known as Anabaptists, but have no historic or cultural links with any Anabaptist-related denomination".
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