Realm
All Sentient beings have spirit breath energy that is imperishable ( energy can never be destroyed) ; after passing away ( if not Raptured), the Spirit energy continues to exist.
God is Spirit energy Source, and being eternal Truth wholly, has a permanent Realm of Existence referred as Heaven.
Those who opt Godliness, attain Heaven, is logical.
Even in mortal terrestrial realms, there are differences in quality of Choices and effects/ results