1) Create a user module that would define which original language text to search, depending on which Testament I'm in?
2) Set up two parallel panes, side-by-side, and then split one of those panes into two vertical halves? (see the proposed mock-up attached)
The second option probably seems more feasible, since creating an original language module would run into issues with word searches being in different languages. My main desire is to be able, wherever I am in the English text, to reference the original languages, while at the same time optimizing my limited screen real estate.