"My Methodist friend would like me to say more about belief and less (in proportion) about the other two."

Statue of John Wesley, Asbury Theological Seminary, Wilmore, Kentucky
Creative Commons Attribution Share AlikeStatue of John Wesley, Asbury Theological Seminary, Wilmore, Kentucky - Credit: Adam Davenport
"The principal founder of the Methodist movement" was John Wesley. Today the United Methodist Church is the third largest Christian denomination in the US.

"In later years, when Lewis showed Mere Christianity to four clergymen, of four different denominations, for their criticisms, he received hostile comments from two of the four. One of these two, inevitably, was his old pupil and sparring partner Alan Griffiths (by then a Roman Catholic monk, Dom Bede Griffiths), who claimed that Lewis undervalued the doctrine of the Atonement. Perhaps more fundamental than this was the criticism he received from a Methodist minister that the book does not really mention, let alone do justice to, the central Christian doctrine of Justification by Faith." (A. N. Wilson, C. S. Lewis: A Biography [New York: W. W. Norton & Company, 1990], 137)