Source, in full
Attributed to Wesley in The English Poets: Addison to Blake (1880) by Thomas Humphry Ward, it also sometimes attributed to his brother Charles Wesley, and appears even earlier attributed to George Whitefield, in The Monthly Review, or, Literary Journal, Vol. 49 (June 1773 - January 1774), p. 430; this has also been reported as a remark made by Rowland Hill, when he arranged an Easter hymn to the tune of "Pretty, Pretty Polly Hopkins, in The Rambler, Vol. 9 (1858), p. 191; as well as to William Booth, who popularized it as an addage in promoting The Salvation Army.