Exaltation, especially for the Solars (and the Abyssals) should be an enormous, profound, life changing event. For the Zenith Caste it would be a religious awakening. They may have been a priest of a different god or even trying to be noticed by the Unconquered Sun (the Zenith Caste are the only real priests of the Unconquered Sun.)
As priests of the dark powers Midnight Caste start off with one dot in Whispers.
At the final moment they receive the attention of the Unconquered Sun during their meditation (after days of ceremony) they are granted their Exaltation.
