Paul uses powerful imagery to describe the resurrection. It's not just a change, it's a complete transformation that leaves no room for decay.
From Perishable to Imperishable
Paul paints a vivid picture here. "Perishable" refers to our current bodies, which are subject to decay, sickness, and death. "Imperishable" is the new body we will receive at the resurrection – a body free from all the limitations and corruption of this life.
Mortal to Immortal
Similarly, "mortal" describes our current state of having a limited lifespan, destined to die. "Immortal" means never dying, an unending existence. This isn't a slight upgrade; it's an entirely new reality secured by Christ's victory.
This transformation is the ultimate hope for believers, a promise that our physical existence will be perfected.