Look in my shop https://www.etsy.com/shop/PohakantenJournals at the styles I do...and maybe we can make one for you. I could make a soft wrap cover that has cord along the binding to slip over the Bible cover, or a heavier leather like a traveler's notebook or A5 style...

The heavier oak leaf I can do custom pyrography work on, and the soft leather would look like the ones here.