These are the journals and autobiography of George Whitefield (1714-1770), who revolutionized 18th-century Christianity by preaching the gospel accessibly and passionately to thousands of ordinary listeners. He regularly preached between 40 and 60 hours a week, to enormous open-air gatherings - and all this before the days of public-address systems. The power of Whitefield's words brought many to belief, and his reputation as a preacher travelled before him, causing a sensation and mass enthusiasm wherever he went.