The assumption is that the dead - depending on their station in life - are in heaven or in a fiery hell. Does this make sense against the pattern of Jesus' teaching and the events of the resurrections he performed?
When Jesus resurrected Lazarus, where was Lazarus when he died? In heaven? No! According to John 11:11 and John 14:14, Lazarus had been dead for several days and had already begun to decay. Lazarus was on earth and in the earth (his grave). So he was not in heaven. And, when Jesus resurrected Lazarus it was back to life on earth. Additionally, when Lazarus was resurrected, he did not report being in heaven (or in a fiery hell). Certainly if he was in any of those places, he would have surely said something about it. Reason why is because the dead are not conscious of anything. Not conscious of passage of time, pain, heat, cold, etc. (Eccl 9:5,10)
King David is reported at Acts 2:34 as never ascending into heaven. So where is he? His his grave awaiting the promised resurrection at John 5:28-29.
By his own words, Jesus said that no one on earth has EVER gone to heaven except the one who came from heaven and had died and ascended back into heaven. (John 3:13)
If - as Jesus taught at Matthew 6:10 - that God's Kingdom is coming DOWN to the earth, why is there a need to go UP to heaven?
The confusion in this matter is caused by the religious system called by men - Christianity. It insists on persons listening to it rather than obeying God at Luke 9:35 who commanded that we listen to His Son.