They way people read it now is. It's a part of a genre called "Apocolyptic" that we don't have anymore, but as riddled with rules as buddy cop movies. Contemporaries would have understood it to be a criticism of Rome with a message about God's ultimate victory over evil, not as a prediction of the end of the world. It really doesn't have much to say to us, mainly because it is riddled with sexist and violent imagery which illustrates a theological claim that we no longer connect with. In fact, we're Rome. It was written by a truly oppressed minority as a warning to people like us. (By "us", I mean the typically white, Western, normatively Christian capitlistic monolithic culture in which we all take part.)