William Evans is a common name, and there have been numerous authors with that moniker, so it is difficult to provide an accurate description without more context. However, if you are referring to William Evans associated with Christian literature, he was an American Christian educator, evangelist, and author born in 1870 in Liverpool, England, and died in 1950. He was known for his work with the Moody Bible Institute and for his many written contributions to evangelical Christian education, which include commentaries, Bible question books, and doctrinal studies. He had a significant impact on religious education in the early 20th century, particularly within the framework of conservative Christian beliefs. If you are referring to a different William Evans with specific works or contributions, please provide additional details to help identify the correct individual.