User blog comment:Zathronas/Analysis by an Author: "This Will Be The Day"/@comment-15108745-20140110211826

I agree with this. I think that there was something that the old generation did in the world of RWBY that somehow seems like a temporary fix. "Beware that the light is fading" shows that something was done to relieve the world of darkness, but that is failing quickly. "I don't wanna hear your absolution" shows the new generations impatience with the choices of the old generation. RWBY then intends to take matters into their own hands.

And then there's the line "Day and night will sever." It could just be a fancy way of saying that something bad is going to happen. But I have the feeling that it's actually foreshadowing what will happen. Maybe something to do with Grimm?