I will protect you

Kim Chul had a spell that could conceal his presence and effectively make him invisible. He wanted to use it, but not while the knights were looking at him. Once they knew what kind of spell he was using they could use something to counteract it. This was an easy thing to do for the knights since Temple had information of most of his abilities. 

'Now that I think about it everything was suspicious since the beginning. Why did I tell them most of my skills and stats? I would normally keep those as a hidden card, yet I willingly gave them the information. Still, it's a good thing that I was able to keep some of it a secret.'

The more he thought about it the clearer his thoughts became. Kim Chul finally realized that many of his actions were weird, even considering that he thought that this world was some sort of game.