[He just assumes the "god" means Yato is one kind of seraph, because sometimes people have called them gods in their world too... but that's not even the focus here. No, in the video, Sorey is shown his eyes wide, clearly impressed by the whole declaration.]
Whoa! Can you really do all of that? And you're offering to help the people no matter what time of day it is? Wow, that's really great of you!