After death is simply just a state of sleep. If you read in John 11:11, it is a story of how Jesus raises Lazarus from death. Jesus speaks of how Lazarus was only sleeping(not in heaven or not in hell), just a state of unconciousness.
You can also in Ecclesiastes 9:5. There is speaks of how the living know that they shall die, but the dead know nothing.
In John 14:25. It states that people will raise out of the graves(not from heaven or hell).
And don't you think that with all the resurrectin that Jesus performed that someone would of had something to say about heaven, if they would of went there.
Death is just a sleep that is awaiting for Jesus to come back and "judge the living and the dead." 2 Timothy 4.