Faith was a very serious matter. It was not just based on the words "I believe" or "I don't believe." Only the recognition from the heart could become faith.
To take an extreme example, Jose, Yan Xun's subordinate, had once been a tribal chief of the barbarian race on the Northern Iceland. Now he had turned into a half-dragon man and continued to work hard to give birth to many descendants so they could form a tribe. He had really hated the Goddess of the Northern Snowfield and Blizzards but had faithfully believed in this goddess at the same time. Therefore, the strong belief and the strong hatred had merged into a deep curse.
This was faith. Even if they hated this god, they would still be able to believe in this god, and that didn't conflict.