Religious indoctrination is likened to the mindless motivations of zombies in this short horror story. The metaphor is unsubtle at best while the world-building is undeveloped, since it’s not about the story–merely the satire. A developed story with a subtle metaphor would be more effective.
Curiously, the acceptance of the religion–Christianity in this tale–also numbs the body and comes with castration by its adherents. To become a zombie, is to become less than human; to accept religion, is to become less than human. Ironically, the un-Christian practice of Obeah [voodoo] is the means to creating the intentional zombies in this tale.