on a stack of Bibles

== English == === Alternative forms === swear on a stack (by ellipsis) swear on stacks of Bibles promise on a stack of Bibles === Etymology === From the practice of some people making an oath on a Bible to tell the truth when testifying in court. === Pronunciation === === Verb === swear on a stack of Bibles (third-person singular simple present swears on a stack of Bibles, present participle swearing on a stack of Bibles, simple past swore on a stack of Bibles, past participle sworn on a stack of Bibles) To make a promise or give an assurance with great conviction. Synonyms: swear on one's life, swear on the Bible ==== Related terms ==== swear on, swear upon ==== Translations ==== === References ===