Timothy Francis LaHaye was an American Baptist evangelical Christian minister who wrote more than 85 books, both fiction and non-fiction, including the Left Behind series of apocalyptic fiction, which he co-authored with Jerry B. Jenkins.

Evangelicalism, also called evangelical Christianity or evangelical Protestantism, is a worldwide interdenominational movement within Protestant Christianity that emphasizes the centrality of sharing the "good news" of Christianity, being "born again" in which an individual experiences personal conversion, as authoritatively guided by the Bible, God's revelation to humanity. The word evangelical comes from the Greek word for 'good news'.