I wonder if each of us has a desire or a subconscious need within ourselves to be a Messiah? What I think of as "The Messiah Complex" seems to manifest itself as a desire to help people.
When this help is rejected it sets up an almost negative reaction and is treated as a bit of a slap in the face, even though we may realise that we were trying to help without being asked.
Correspondingly, when our help is accepted there can be satisfaction and sometimes even a feeling of joy within.
The desire to help may be the same start that has sparked figures throughout history to exceed and excel and become accepted as a Messiah.