The present invention provides audio bible players with a 6-digit or 5-digit numerical indexing system to the chapter level, or a 9-digit or 8-digit numerical indexing system to the verse level. Users can not only find a particular chapter or verse of the bible quickly, but also can switch to the same chapter or verse of a different translation easily for comparison study. They are easy and convenient to use, and are great tools for bible study, bible memorization, language study, and sharing bible with people speaking other languages.