I've tried dozens of Bible Apps and found the best one for the Kindle Fire is the Tecarta.
During Bible Studies I can locate any verse in three screen taps. I can operate in split screen with the NIV on the left and on the right either the NIV Study Notes or the KJV.
When passages are read by others or myself, I can set scroll mode and never have to turn the page as it self scrolls to the speed of the reader (5 speeds available).
Many font sizes are available so I can make the text just the right size for me. Plus, I cand find all verses in the Bible containing any word INSTANTLY and then go to that verse or return to the summary of all the verses and go elsewhere.
If I want to go back to other verses read in the Bible Study session, it has a History button and one can go back and forth instantly to any verse. It operates in Portrait and Landscape Modes.
WiFi is unnecessary for this Bible to fully function.
The KJV version is free and the NIV is $ 5.99 available here:
http://www.amazon.com/Tecarta-Inc-NI...1763321&sr=1-2