Its name comes from Mount Amalath upon which, at a great conclave, the first tenets of the Amalathian belief system were set down. The Amalathians believe that the Emperor has a grand plan and that it is unfolding as it should. They are therefore concerned with maintaining the status quo and react vehemently against change. They are less concerned about the threat of mutation, witchery and the like, and more active in ensuring there is harmony within the vast Imperial organizations, that any rivalries and discord are dealt with and kept to a minimum.
It is the code of the Amalathaian that strength is achieved through unity, and politicking and change will serve only to destabilize the Imperium. Noted amongst the many allies of the Amalathian are the Adeptus Arbites and local security forces. The mandate of such organizations being the upholding of imperial law and order thus maintaining the status quo and, in the eyes of the Amalathian, the strength inherent in the Imperium and the Emperor's design for it.