There have been quite a number of books written by or about people who claim to have personally visited Heaven.
Some of these authors profess to be Christians while others do not. The descriptions of their experiences vary regarding such things as entering into a dazzling white light at the end of a dark tunnel and being greeted by deceased loved ones, or being in the presence of God and seeing the shed feathers of angels dotting the grand floor of His throne room. Many of their stories contain information that would seem to be beyond their ability to know at the time--or at all.
Although these individuals supply much information, the content raises many questions. Obviously, everything they say can't be true because some of the content in one book contradicts what's written in others. How do we know who is giving us an accurate and truthful account?
A biblical Christian might say that he would compare what they say with what is presented in the Scriptures about Heaven. If it rings true to the Word of God, then it must be true. Well, yes and no. Yes, it must be true to Scripture. What is presented certainly cannot be at odds with what the Bible teaches about Heaven; nevertheless, just because it conforms to Scripture doesn't prove that the person's declaration or experience of being in Heaven actually took place..
Heaven Is for Real is a nonfiction account that documents the experience of a three-year-old boy who believes that he visited Heaven..
The critical issue for discernment is not "how it works" but "what is being communicated." All that a Bible-believing Christian can do in ascertaining the truth of a matter is to be vigilant by "searching the Scriptures" to see if what is being presented is true to the full counsel of God's Word (Acts:17:11). If we don't do that, whether we are young believers or mature in the faith, we are just as vulnerable to false teachings as those whose circumstances have directly opened them to deceptive experiences."