The Notes Upon The New Testament is considered to be one of John Wesley's principal works, and its readability, influence and popularity has remained since the time of its publication until today. First printed in 1755 by William Bowyer, John Wesley's Notes Upon The New Testament were entirely his own work, written during a period of illness which forced him to abandon his usual routine of travel and preaching. He would write from 5 am - 9 pm every day, unless he was riding, eating, or taking his personal devotion time (5 - 6 pm each evening). Charles Wesley assisted in some ways, including his translations of the gospels and in other unspecified ways. Wesley cites his influences for the New Testament Notes as the Gnomon Novi Testamenti of Bengel, the Paraphrase of Dr Guyse, the Theological Lectures of Dr Heylin and the Family Expositor of Dr Doddridge. The fourth and fifth editions of the Notes contained corrections by John & Charles Wesley and others.
John Wesley is recognized as the founder of Methodism. An acclaimed preacher, Wesley travelled extensively on horseback and drew large crowds for his outdoor sermons. A contemporary of William Wilberforce, Wesley was a strong voice opposing slavery in England and the United States. His influence upon modern Christianity can be seen by the large number of Methodist organizations in the Wesleyan tradition all over the world.