Charles Wesley in the context of "John Wesley"

Methodism, also called the Methodist movement, is a Protestant Christian tradition whose origins, doctrine and practice derive from the life and teachings of John Wesley. George Whitefield and John's brother Charles Wesley were also significant early leaders in the movement. They were named Methodists for "the methodical way in which they carried out their Christian faith". Methodism originated as a revival movement within Anglicanism with roots in the Church of England in the 18th century and became a separate denomination after Wesley's death. The movement spread throughout the British Empire, the United States and beyond because of vigorous missionary work, and today has about 80 million adherents worldwide. Most Methodist denominations are members of the World Methodist Council.

Wesleyan theology, which is upheld by the Methodist denominations, focuses on sanctification and the transforming effect of faith on the character of a Christian, exemplified by living a victorious life over sin. Unique to Wesleyan Methodism is its definition of sin: a "voluntary transgression of a known law of God." Distinguishing doctrines include the new birth, assurance, imparted righteousness, and obedience to God manifested in performing works of piety. John Wesley held that entire sanctification was "the grand depositum", or foundational doctrine, of the Methodist faith, and its propagation was the reason God brought Methodists into existence. Scripture is considered the primary authority, but Methodists also look to Christian tradition, including the historic creeds. Most Methodists teach that Jesus Christ, the Son of God, died for all of humanity and that salvation is achievable for all. This is the Arminian doctrine, as opposed to the Calvinist position that God has predestined the salvation of a select group of people. However, Whitefield and several other early leaders of the movement were considered Calvinistic Methodists and held to the Calvinist position.

The United Methodist Church (UMC) is a worldwide mainline Protestant Christian denomination based in Africa, The Philippines, Europe, and the United States claiming 10 million members, and is a major part of Methodism. In the 19th century, its main predecessor, the Methodist Episcopal Church, was a leader in evangelicalism. The present denomination was founded in 1968 in Dallas by union of the Methodist Church and the Evangelical United Brethren Church, and is shaped by the voluntary separation of 25% of the United States churches leading up to the delayed 2020 General Conference held in 2024. The UMC traces its roots back to the revival movement of John and Charles Wesley in England, as well as the Great Awakening in the United States. As such, the church's theological orientation is decidedly Wesleyan. It embraces liturgical worship, holiness, and evangelical elements. According to its Book of Discipline, "The mission of the Church is to make disciples of Jesus Christ for the transformation of the world."

The United Methodist Church has a connectional polity, a typical feature of a number of Methodist denominations. It is organized into conferences. The highest level is called the General Conference and is the only organization which may speak officially for the UMC. The church is a member of the World Council of Churches, the World Methodist Council, and other religious associations.

George Whitefield (/ˈhwɪtfiːld/; 27 December [O.S. 16 December] 1714 – 30 September 1770), also known as George Whitfield, was an English Anglican priest and preacher who was one of the founders of Methodism and the evangelical movement.

Born in Gloucester, he matriculated at Pembroke College, Oxford in 1732. There, he joined the "Holy Club" and was introduced to John and Charles Wesley, with whom he would work closely in his later ministry. Unlike the Wesleys, he embraced Calvinism.

Wesleyan theology, otherwise known as Wesleyan–Arminian theology, or Methodist theology, is a theological tradition in Protestant Christianity based upon the ministry of the 18th-century evangelical reformer brothers John Wesley and Charles Wesley. More broadly it refers to the theological system inferred from the various sermons (e.g. the Forty-four Sermons), theological treatises, letters, journals, diaries, hymns, and other spiritual writings of the Wesleys and their contemporary coadjutors such as John William Fletcher, Methodism's systematic theologian.

In 1736, the Wesley brothers travelled to the Georgia colony in America as Christian missionaries; they left rather disheartened at what they saw. Both of them subsequently had "religious experiences", especially John in 1738, being greatly influenced by the Moravian Christians. They began to organize a renewal movement within the Church of England to focus on personal faith and holiness, putting emphasis on the importance of growth in grace after the New Birth. Unique to Wesleyan Methodism is its definition of sin: a "voluntary transgression of a known law of God." Methodist doctrine teaches that the life of a Christian subsequent to the New Birth should be characterized by holiness, living victoriously over sin. Calling it "the grand depositum" of the Methodist faith, John Wesley taught that the propagation of the doctrine of entire sanctification—the work of grace that enables Christians to be made perfect in love and be made free from the carnal nature—was the reason that God raised up the Methodists in the world.

The Holy Club was an organization at Christ Church, Oxford, formed in 1729 by brothers John and Charles Wesley, who later founded Methodism. The brothers and associates, including George Whitefield, met for prayer, Bible study, and pious discipline.