Why is the highest future revelation (Techiyas HaMeisim) universally accessible to Jews, while a lower one (Gan Eden) has prerequisites?

The Maamar takes a seemingly straightforward verse about redemption and unpacks multiple layers of meaning.

The light of the Geuloh is inherently beyond our grasp, nonetheless we can make ourselves and the world a vessel to perceive it as it shines within the familiar light of this world.