To Heaven and Back discussion

A doctor told me she was inspired by Mary Neal's book - yet another book about going to heaven or hell and returning. I have not read any of them, but the common premise is that God sent them back to warn others. I say that is a lie in every case, because Jesus told the parable of the rich man and Lazarus and refused to send Lazarus back to warn the rich man's family. The Word of God was sufficient warning. God does not change, and I for one cannot believe that Jesus would now tell all these book writers something different. I note that Jesus DID return from the grave and the religious leaders lied and still rejected him.