Heaven. Eternity. The Afterlife. You mention any of these concepts, and people of all ages and from all walks of life are certain to have opinions. Maybe that's why there are so many books and movies that feature heaven-and-back experiences. But how can we know if those accounts are accurate? How can we know for sure what heaven will be like? Well, according to New Testament scholar and popular author Scot McKnight, all we need to do is to turn to scripture to answer our questions.