Cult of the Crimson Sun

Origin
The Crimson Sun Cult was one one of the most powerful religions being it's only rival the Cult of the Silver Moon. With time new gods arrived and it wasn't long until the sun was forgotten, instead, they began to worship gods of clay and stone and still others worshipped something called science where they denounced the sun and moon of their godhood, making them quite mad and thirsty for vengeance. Years later the sun has chosen Rael Belenus the one that will bring glory to this cult once again a descendent of the last line still alive of Sun Cultists

Beliefs
One of the principal beliefs of this cult is the fact that the Sun along the moon is the creator of everything and sacrifices are needed for it to keep bringing ligth and protection

Beginning of the world
Ancient fragments of data from the cult say that in the start there was darkness and void but then the sun and the moon came to bring ligth. They created a realm full of life but they had to split it and both wanted to rule entirely, a figth that lasted many years started and in the end none of them could win so they made an agreement  One will die and the other will rise until the time of sleeping again comes   and because of that every nigth the sun gives his throne to the moon. Obviously this can't be confirmed because of how old and hard to comprehend the information was