I’d like to think that a perfect being wouldn’t have such a fragile ego.
He feels the need to punish people eternally for having crossed him?
Uh, no. The person brings their punishment upon themselves by refusing to ask for His forgiveness while they have the opportunity.
If my sister does something horrible against me, such that we are completely estranged, all she need do at any time is say ‘sorry’ and I’ll happily resume my relationship with her.
If she, however, refuses, then as much as I may want to forgive her I certainly can’t force her to listen to me or accept my forgiveness. Even if I try to talk to her, she is capable of refusing to accept the call or to listen to me. That’s entirely her choice to continue the estrangement when I am trying to repair and resume the sisterly bond between us.
And if she dies, or I die, while we are in that state of estrangement, then there’s nothing either of us can do to repair it. It’s too late.
See, I didn’t punish my sister in any way in this example, on the contrary I did everything I could to reconcile. She instead herself brought on the permanent estrangement, the punishment, by not taking an early opportunity to repair relations between us.
Remember, after death is eternity - a state of existence which is outside of time. Eternity is a changeless state of existence, for change cannot happen outside of time. That is why time - ‘evening and morning’ (as marked by the coming of a period of light to contrast with the darkness and mark the passage of the first mornign and evening) is the first creation. All change has to happen in the context of time.
So once I die I am permanently fixed in whatever attitude I had towards God, whatever relationship I was or wasn’t in with Him, at the point at which I stepped outside of time and into eternity (the point of death). Just like my body will be permanently fixed at whatever age it will be when I die, and neither grow older nor younger.
There will be no time to change my mind after death - there will be no time full stop!