The Three Devils of Han believes that Sword God is some ancient swordsman who have broken through the coils of mortal life and coupled with vague words that come out from Azief words, they mistakenly believe that Azief is coming to the Temple of Xi to ascend to become an Immortal
The Three Devils of Han would not believe such story of Immortals and Gods, and Demons a few years ago.
But they have witnessed the miracle that is the Sword God. In this world, the Sword God truly has no match. He did not even need to use sword to kill people.
There is also that two sword strike that cut the head of the Emperor thousands of miles away
There are many things in this world that could not be explained and one of them is the Sword God prowess that seems to reach the level of power described in ancient text when describing Immortals and Demons.