Definition & Meaning of "Bible pounder"in English

What is the origin of the term "Bible pounder" and how is it used?

"Bible pounder" is an English slang term that emerged in the mid-20th century, formed from "Bible" and "pounder," evoking the image of someone forcefully emphasizing scripture, sometimes literally pounding the Bible for effect. It describes a fervent or overzealous Christian who aggressively preaches or promotes their faith. The term is used in informal speech, media, and social commentary, especially in English-speaking countries, and is mildly to moderately derogatory, criticizing zeal or pushiness rather than being vulgar.