Evangelicalism, a worldwide interdenominational movement within Protestant Christianity, is one of the most popular and diverse religious movements in the world today. Evangelicals maintain the belief that the essence of the Gospel consists of the doctrine of salvation by grace, through faith in Jesus' atonement. Evangelicals can be found on every continent and among nearly all Christian denominations. The origin of this group of people has been traced to the turn of the eighteenth century, with roots in the Puritan and Pietist movements in England and Germany. The earliest evangelicals...