“[…] The hour is coming in which all those in the memorial tombs will hear his voice and come out, those who did good things to a resurrection of life, and those who practiced vile things to a resurrection of judgment.”
~John 5:28,29

Was Jesus referring to a future judgment in heaven or on earth?
The Hebrew Scriptures describe the resurrection hope as taking place on earth:
“He will swallow up death forever, And the Sovereign Lord Jehovah will wipe away the tears from all faces. The reproach of his people he will take away from all the earth […].” (Is. 25:8)
Who are those “in the memorial tombs?”
The term used here is derived from the Greek verb meaning to remember (mimneskomai), implying that the person who has died is remembered by God, regardless of where their body winds up physically.
Jesus used the verb when he offered hope of living in paradise to the felon being executed alongside him on a stake. (Luke 23:40-43)
Jesus made a covenant for a heavenly resurrection with those who stuck out his trials with him. (Luke 22:28-30)
But for most of us, faith in being in Jehovah’s memory and the promise of an earthly resurrection is our most viable longterm hope.
In the restored paradise, we will have a clean slate to chose eternal life or destruction by the choices we make then. (Ro. 6:7; Rev. 20:12,15)