Download of Online Bible 4.2.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally produced by Cross Country Software.
The most popular version among the program users is 4.1. The most frequent installer filename for the application is: olb_app_4.1.1.dmg. The program lies within Education Tools, more precisely Reference. The bundle id for this app is com.crosscountrysoftware.molb.
From the developer:
Online Bible is a full-featured program designed for serious Bible students. You can display Bible passages and notes in any number of windows. Most operations can be performed using either the mouse or keyboard commands. The program is both powerful and easy to use.
In addition to the King James Version, over thirty other English versions are available.
You may want to check out more software for Mac, such as Bible+, Bible-Discovery or Bible Study, which might be related to Online Bible.