Part 5/7:
Sauron's physical demise came with the destruction of Númenor, where he lost his corporeal form during the cataclysm that followed. His subsequent inability to assume a beautiful form indicated a significant reduction in his power. His next corporeal incarnation came after forming a new body, yet this too was lost during the conflicts of the Last Alliance of Elves and Men.
When Isildur severed the One Ring from Sauron’s hand, his spirit escaped into the shadows, losing its physical vessel. It became clear that his power to form a corporeal identity diminished markedly after each significant defeat, driven by the loss of the One Ring, which was crucial for sustaining his existence.