We can’t assume one way or the other, can we? We can only go to the Word and prayerfully test all things. Remember, wide is the way that leads to destruction, but narrow is the gate.
I think any of us readers of this book went into it with the plan of “testing” it and not making judgments first as so many non readers are doing here. I, and it seems to be the rest of the readers who finished the book all say it sounds credible.
Are we 100% certain? No, its not our story it is theirs, but at the same time we have not found anything in it that would lead us to believe it was fabricated either.
So let them tell their story, what’s the harm in that? Bible book stores are full of the most wonderful testimonies from people of all ages.