A Wordless Book is a Christian evangelistic device. Evidence points to it being invented by the famous London Baptist preacher Charles Haddon Spurgeon, in a message given on January 11, 1866 to several hundred orphans regarding Psalm 51:7 "Wash me, and I shall be whiter than snow." It is called a "book", as it is usually represented with pages, although it can be shown on a single page or banner. The book consists of several blocks of pure color that, in sequence, represent a nonverbal catechism for the instruction of children, the illiterate, or people of different cultures about basic Christian teachings. However, the presentation of the book is meant to be a verbal experience, providing the "reader" a visual cue to expound Christian doctrine extemporaneously or in impromptu situations.
Different versions came about when Dwight Lyman Moody added another color: gold – representing Heaven in 1875. Hudson Taylor and missionaries of the China Inland Mission used the four color version in open-air preaching and individual evangelism. Modern versions include even more colors, such as green "to grow in the knowledge of God". It has been used by missionaries and teachers such as Jennie Faulding Taylor, Amy Carmichael, Fanny Crosby (who was blind), and modern day Child Evangelism Fellowship which added a fifth color: green - representing one's need to grow in Christ after salvation.
Two books published by Child Evangelism Fellowship under the title "The Wordless Book"