When the contestants saw the word "soul" on the test segments, they all had pretty much the same thought.
The power of the soul. Something that could be considered the quality of a Divinity.
Some people had extremely powerful souls since birth, like Damien, and those people had talent beyond talent. They could comprehend a hundred things for every one thing comprehended by an average genius.
These people were highly valued by any influence, and above all, if their soul had a specialized quality that leaned towards a specific law…
Nothing else needed to be said. All sects and influences tested people's souls to look for this exact quality, because it wasn't something that could be seen with the human eye.
However, they were wrong. Damien's eyes weren't like the usual person. He could see the things they couldn't, so he had no need to test for soul quality.
The purpose of his test was character.