What secret does The Legend of the Solar Cult hold?

“A bright living fire, as if sensing something, fluttered around the sacred altar. The old priest approached it with great respect and sorrow. Apologetically, the minister covered the flames with a thick cloth. The hearth, deprived of air, was soon extinguished, and only soot rose in the wake of the departing priest. Closing the doors tightly, the old man waved his hand to his assistants. They immediately began to seal the temple. " The Legend of the Solar Cult.