Salam ZKAB90,
You said:
The punishment that will occurr in the barzakh will affect only the soul, not the body. So, probably the punishment will be only a nightmare, and this is in line whith the soul affected by punishment.
Firstly, can I ask you to cite which verse/s you base that view/belief on?
Secondly, if, as you've said, it is only the soul and not the body which will receive punishment in barzakh, then do you also believe that Allah is referring to the souls and not the bodies of the martyrs when He says of them that
they are not dead, but rather alive?:
Do not think of those who are killed in the way of Allah as dead. Rather, they are alive...[Quran 3:169]
And thirdly, even if it is the soul/s and not the body which is to recieve punishment during barzakh that still doen't explain how:
1) One can be punished without, first, having received a fair trial before his Lord?
2) If Allah will punish the sinners in their graves without first having given them a fair trial, then of what point is there in having a trial on Judgment day?