If another god, through divine intervention, wiped all the Holy Bibles, printed and electronic, off the face of the Earth...
... how would the Christians then know what God wanted, and what hey had to do to get to heaven?
They rely solely on the printed word. A book. A material possession. All the philosophical nonsense and debate cannot escape that one single reality. Without the God manual, you cannot know how to worship properly. It is a man made construct.
Gambit doesn't believe in divine intervention... so how did his book come into being? Chicken or the egg.