Slides within the Bible module are treated just like regular presentation slides except you can't directly edit the slides. If you are searching for verses on the fly, you can just click on the thumbnails to send them to the screen. Once you have found the passage that you want to use, you have a few options. In ProPresenter 5 you can create a template for Bibles that has custom formatting for the reference and the text, but in ProPresenter the same font settings are used for both in a single text box. You can also change the template that is used for the Bible passage and how you want the verses displayed. This set of options allows you to select the translation you want to use, search for a chapter of the Bible, search for a passage, or search by keyword.
When the module opens you will see these settings at the top of the window. To use Bibles in ProPresenter, click on the Bibles button in the toolbar or from the View menu.
Once you have installed your Bible translation(s) you can access it from within ProPresenter.