Angels are born of the tears of the kingdom of heaven.
Literally.
The castle that IS "The Kingdom of Heaven" continually weeps at the injustice of the world.
Its waxen tears, each the size of a man, contain the embryonic forms of angels who are born when the drops containing them fully fall.
This process can take anywhere from 1 hour to a millennia depending on the power of the angel to be born which varies based upon the evil the angel is made to confront.
The most recent unborn angel to take more than one decade to be born is theorized by the heavenly scholars to be an answer to capitalism.
As such the kingdom is on high alert for would-be assassins and have barred its chamber from all but the most proven of the worthy.










