It is said of Shiva that He does not incarnate. Of Parvati's bhakti (devotion), it is said She is one who can make even Shiva incarnate.

It is said of Shiva that He does not incarnate. Of Parvati's bhakti (devotion), it is said She is one who can make even Shiva incarnate.
He is Timeless, and yet when Parvati manifests, it is time for Shiva to arrive. He is formless, but when She arrives, He manifests form. She is His eternal soulmate, and they always find each other, through the mists of cosmic time, even through lifetimes; such is the magic of their love! For it is said, Parvati is His wife even from Her previous birth, when She was called Sati.
And I realised that behind the innumerable tales about Him,
at the core of the myriad roles that He plays out, Shiva's story,
is essentially a love story, over and over again.
( Author's note from the book SHIVA, The Ultimate Time Traveller. )