I just thought to mention this; you can also create a seperate page just for the Bible and put links to it in the biography sections on the individual profile pages. I've done this with a photo from the 1880's or 90's that belonged to my grandmother. No one knew who the two girls pictured were.
In the bio section for my grandmother and several other members of her family, I have a note that reads:
Have you seen the Mystery Girls?
You do this by clicking on New Profile at the top of any profile page, then just add an appropriate title and other info for the Bible, and click on the "Create New Profile" button. You can then upload the Bible pictures to their own page.
The internal link to the page for my mystery girls looks like this when editing the bio:
: Have you seen the [[Space:Edgerton/Oden_Mystery_Girls | Mystery Girls]]?
The text "Mystery Girls" before the "]]" can be any text at all. For example, yours might read:
: Jane's birth is recorded in my grandmother's family Bible, shown on [[Space:Grandma's Family Bible Page | image #3]].
And the text in the saved bio section would read:
Jane's birth is recorded in my grandmother's family Bible, shown on image #3.
With the words "image #3" being a live link to the Bible page.