Divided

Like many songs by Paradise Lost, this one expresses a pessimist's view of the world and a negative bias towards religion.

"This your only grace The art of conversation Regarding common sense As merely an infliction"

The only redeeming quality of humankind is our ability to communicate, but in spite of this logic and reason are often seen as problematic while irrational beliefs are revered.

"Maybe you're content Relying on religion You steal without consent Just consummates my theory"

Those who devote their lives to religion contribute little to the betterment of mankind while benefiting from the achievements of rational individuals. This observation confirms the protagonist's fears that mankind/society will not last.

"Divided we'll stand Regardless we'll fall How subtle the words we've come to know"

We (mankind) stand for many things, but we are not united and thus are doomed to fall. Our downfall has been described/foretold in detail many times through stories with which we are familiar.

"Divided we stand Determined to fall Just like this hollow world that sleeps inside of me"

Through our beliefs and actions we work towards our own downfall, not destined through fate, but determined by our own doing. This observation is analogous to the protagonist's own life which he sees as meaningless and knows will eventually end. The purpose of life is to end.

the song is about mankind's ability to speak and interact with other people. anyway we still stand "divided" meaning everyone stands alone in life. we may be able to talk to other people and make friends but still they will never fully understand you and you will never fully understand them.