I'm not entirely sure about this book. But from the title, it could be a story where the events are so profound that they are like a taste of heaven on earth. Maybe it's about people experiencing something extraordinary, like a series of miracles or a life - changing encounter that makes them feel closer to a heavenly state.
It could also be in the genre of inspirational non - fiction. The 'incredible' aspect of the story suggests that it has the potential to inspire readers, perhaps by showing how people overcame difficulties or had a life - changing encounter, which are common themes in inspirational non - fiction.
Most probably not. 'A Time for Heaven' is often classified as a work of fiction. Usually, such titles are crafted from the imagination of the author or screenwriter to tell an interesting tale rather than being based on real events.