Meaning of "Horsemen" by New Model Army

The lyrics of "Horsemen" by New Model Army seem to be discussing the concept of inevitable change and the end of all things. The repetition of "It must be, it must be" emphasizes the idea that this end is predestined and unavoidable. The imagery of people working to record this event, whether by candlelight, oil-light, or modern computer screens, suggests that throughout history, humans have been fixated on documenting their existence and the changes that come with it. The reference to the horsemen being saddled up on the far horizon symbolizes a looming apocalypse or significant change on the horizon that cannot be stopped. The combination of ancient methods of inscription like velum and stones with modern tools like computers emphasizes the timeless nature of the end that is coming. Overall, the song seems to be reflecting on the impermanence of life and the inevitability of change, urging listeners to consider their place in the grand scheme of things.