I've always thought this song was about Satan leaving heaven. Paradise comes at the price of his servatude to God, and he is unwilling to pay it. I also think the lines "when I am gone It wont be long, before I disturb you in the dark" also support this interpretation. The lines "they'll grow up and beak the laws you loved." is Satan taunting God about the sinfulness of humans. Plus the huge organ part suggests a religious overtone. Take this interpretation for what you will and remember; athesists can still write a cool song about Christian mythos.