In the Year of Evil Demon's Descent, accompanying the war with the Evil Demons, the first batch of Deities appeared among the humans.
They could transform into an Evil Demon and absorb power from killing and fresh blood. Of course, the fastest method was still killing each other.
The most important thing was that being Deities gave them sufficient concealment abilities. Ordinarily, they were completely the image of an average person. As long as they did not actively reveal themselves, even a pastor's magical abilities could not tell the difference, unless a Legend pastor carefully investigated or they entered the domain of an actual God.
And more and more infected appeared, causing the Church of Death, which implemented the 'purification order', to become the target of public criticism, leaving them with no choice but to withdraw the Inquisition.