Cooper expanded on the song to Christianity Today magazine: "In a theological sense, the song is about original sin. You are born into the human race, you're guilty or sinful, no matter what you hope to be. "Monster" is about the fact that there is somebody we know we don't want to be. Some people call it the old man or the old self. That guy wants to creep out when you're driving and somebody cuts you off. You wonder as a Christian, how do I keep it at bay? I liken it to the idea of a '50s horror film of this beast inside you coming alive."