Abhailism
Abhailism is a polytheistic religion based around the The Children (Gods of Eight), as well as Spirits (Spirits of a Hundred Million), and Saints. It is the dominant religion in the Trinterian cultural sphere, as well as in select territories around the world with roughly 165 million worshippers.
In the modern day, Abhailism remains diverse both in culture, and doctrine with many different branches co-existing concerning different aspects of the teachings of the Holy Codex, and the lessons of the Gods of Eight. Despite many differences being exhibited between the branches, it is held in common that the Creator - the all-powerful entity overwatching all of existence created the universe, and life to match whilst The Children (otherwise known as the Gods of Eight) lived, journeyed, struggled, suffered and died amongst and with the mortals of the world and ascended to the realm of Godhood at the peaks of Mount Abhaile for the salvation of sentient life. The life, death and ascension of The Children are compiled in the Holy Codex of Abhaile, and split into the forms of Arbithes, meaning "Struggles", each telling the story of one of The Children.
Believed to be a development of folk beliefs from Trinterian mythology, Abhailism was transmitted through oral culture before it was transformed into codified text beginning with the Aeterite Republic around the 10th Century BCE. During the times of Ancient Trinteria, Abhailism enjoyed varying degree of popularity across the Fefsen-speaking world, and was commonly practiced thanks to its spread through trade, and wars of conquest and assimilation. Chosen as the official religion of the Trinterian Commonwealth the reign of Ieasca The Great in the 1st century BCE, Abhailism has ever since became a fixture of Trinterian culture, itself becoming a driving force behind the Commonwealth's history of expansionism (otherwise known as the March of the Marghal), with many peoples and different cultures assimilated linguistically and culturally. Due to historical events, the religion slowly began to develop in different courses, resulting in the existence of different doctrines of worship in the modern day.
As of today, the Abhailist faith remains the dominant religion in the Trinterian cultural world, and distributed across several continents in part thanks to the Comlathas project and remains a fixture of several nations' culture despite a slow decline in adherence thanks to moves towards secularisation.
Etymology
Despite no official consensus existed regarding a name for the faith in the ancient world, early worshippers of Abhailism, in particular amongst the Imirodric Sect in the Aeter Republic referred to themselves as "The Disciples" (Ancient Fefsen: Matéir; Modern Fefsen: Lántóir). An official term was not granted until the founding of the Supreme Abhailist Adharth of the Commonwealth (commonly known as the Comlathas Adharth), where the name "Abhailism" (Abhailachas) was chosen from the mountain where The Children journeyed to ascend to Godhood. As such, the earliest usage of the word originated from the reign of Ieasca The Great in the 1st century BCE.