As a trans-denominational movement, evangelicalism occurs in nearly every Protestant denomination and tradition.The Reformed, Baptist, Wesleyan, Pentecostal, Churches of Christ, Plymouth Brethren, charismatic Protestant, and nondenominational Protestant traditions have all had strong influence within contemporary evangelicalism.
The United States has the largest concentration of evangelicals in the world.
Based mostly in the Bible Belt, US evangelicals are a quarter of the nation's population and politically important.
A conversion experience can be emotional, including grief and sorrow for sin followed by great relief at receiving forgiveness.
The stress on conversion differentiates evangelicalism from other forms of Protestantism by the associated belief that an assurance of salvation will accompany conversion.
Among leaders and major figures of the evangelical Protestant movement were John Wesley, George Whitefield, Jonathan Edwards, Billy Graham, Bill Bright, Harold John Ockenga, John Stott and Martyn Lloyd-Jones.
The movement gained great momentum during the 18th and 19th centuries with the Great Awakenings in Great Britain and the United States.All evangelicals believe in biblical inspiration, though they disagree over how this inspiration should be defined.Many evangelicals believe in biblical inerrancy, while other evangelicals believe in biblical infallibility.During the Reformation, Protestant theologians embraced the term as referring to "gospel truth".Martin Luther referred to the evangelische Kirche ("evangelical church") to distinguish Protestants from Catholics in the Roman Catholic Church.To evangelicals, the central message of the gospel is justification by faith in Christ and repentance, or turning away, from sin.