It says in the first Mishneh of the chapter Chaeilik in Sanhedrin, "All of Yisroel have a portion in the world to come etc...", Which is referring to the world of the resurrection, as it says in the gemara later on daf 90, that "these are those who don't have a portion in the world to come... One who denies the resurrection of the dead from the Torah... Measure for measure", which proves that since he's punished measure for measure, then the "world to come" here is speaking of the resurrection
Anyways, why is it that all of the people of Yisroel have a portion, seemingly without (as many) conditions (besides for the few mentioned in the gemara there, but in general the Mishnah says "all"...), While in the garden of Eidin, the world of souls without bodies, there are many conditions to get in, with many different judgements, as it's known that Achair was only let in after other people prayed for him, and even after all of that, he was only let in to the lower level of the garden of Eidin, but "all of Yisroel have a portion in the world to come", without conditions and the same kind of judgement?
And especially if the world of the resurrection will be much greater than the world of souls, since the souls ascend 3 times each day, and some have been there for thousands of years, yet in the time of the resurrection, they will all come back down into physical bodies in order to get the revelation of the resurrection of the dead, but why is that, if it will be for everyone without conditions?
And even more, the entire point of the ascents of the garden of Eidin involve forgetting ones previous level through the "river of fire", as it is known, which the souls pass through but only when they first enter from this world, but at every ascent to a higher level, they first most immerse in the river, in order to completely forget the previous level and become more refined and removed etc to rise to higher and higher levels, but at the time of the resurrection, they will all come back into physical bodies in order to recieve the revelations of the resurrection
So why (according to the Ramban) will the souls, who have been ascending to higher and higher levels etc., need to come back into physical bodies in order to recieve the revelations of the resurrection, and why is the resurrection for all of Yisroel, while the garden of Eidin is only for some, if the revelations of the resurrection are much greater than the garden of Eidin?
