Well, my idea didn't work. The problem I had run into is that Bibletime required libraries inconsistent with those otherwise used under fossapup64. The idea I had was to create a portable which contained the libraries Bibletime needed specifying that those should be used. It should have worked. But I'm no coder.
I suspect someone who is will have to look into this problem.
Maybe this will help. I originally created an SFS using fossapup64's Puppy Package Manager and packing then with PaDS, https://www.forum.puppylinux.com/viewtopic.php?t=933. IIRC, I had to hunt up a couple of libs which ListDD reported missing. The following screenshot show all required libs.

- bibletime-libs.png (71.96 KiB) Viewed 1487 times
Looking at it, I think all that was missing was lsword-1.8.1.so.
SFS-loading the bibletime.sfs produced /usr/share/applications/bibletime.desktop and so a menu entry. I had selected x-personal using PaDS. So it showed up on the Personal Submenu. It could not be started from the menu, by click the desktop file, or by clicking the executable: /usr/bin/bibletime.
However, when I tried to run it from a terminal [Right-Click /usr/bin/bibletime > Run-in-terminal] in order to try to find out what was going wrong, the application started. The terminal reported nothing. I don't know what's wrong with starting it normally; and don't know how to investigate further.
The application comes without BOOKs, and without them it's not very useful. They have to be downloaded by the application. Using the version under Wine I previously mentioned, it took over an hour to download everything offered except 'Daily Devotionals'. I couldn't figure out where they were stored; so can't copy them.
In its current state I don't trust the application under fossapup64. Certainly not sufficiently to tie-up my computer downloading Books.