I've written a Ruby module that serves as a wrapper for the API. You can check it out on github: https://github.com/leehsueh/biblia-api-rb
I've also put together a simple Ruby app (using Sinatra) that makes use of the module. So far the app only has convenient wrappers for the content and search services, but you can also enter in arbitrary requests to see what the response is. I figured it would be helpful for developers looking to use the API in their own applications. Check it out here:
http://biblia-demo.heroku.com
It's a work in progress so the front end is a bit crude and ugly, but feel free to let me know of any issues/suggestions on anything.
