The main theme of "obZen" is "human evil", according to Haake. The title is a play on the words "obscene" and "Zen"; in addition, "ob" means "anti" in Latin. Therefore, the title suggests that the human species has found harmony and balance in warfare and bloodshed. "Revolver Magazine" finds the lyrics of the title track from "obZen" representative of the entire album: "Salvation found in vomit and blood/Where depravation, lies, corruption/War and pain is god." However, Haake claims, "We don't dwell on hate and bad feelings as people. But with these songs, I think we really wanted to paint a picture lyrically that might be seen as a cautionary tale. We're going, 'Heads up. Here's what some of the parts of being human are about, and this is what we can be at our worst.' So it's more about being aware of negative feelings than actually living them all the time."