Thomas’s religious delusions

Thomas’s religious delusions transform familiar Christian language into a private system of divine orders, persecution, and sacrifice. In Dominick Birdsey’s retrospective account, scripture and saints help Thomas impose purpose on a frightening world, but that purpose increasingly centers on conspiracies and a bodily mission. The system reaches its most devastating expression on October 12, 1990, when Thomas interprets a Gospel command as requiring him to cut off his right hand.

Scripture and the Body

Thomas’s most consequential religious interpretation comes from the Gospel of Matthew. On the day of the library incident, after Theresa Fenneck reprimands him beside a study carrel, he resumes praying silently and repeats the passage about removing an offending eye and hand. He then takes up a Gurkha knife that had belonged to his stepfather, a World War II souvenir that had hung forgotten on a bedroom wall in the house where the brothers grew up. The movement from a familiar verse to an instruction enacted on his own body gives the delusion its terrible logic: an abstract command becomes a practical, irreversible task.

Thomas carries out that task with his left hand, following steps he has rehearsed in his mind. The surgeon who later treats him is astonished that he could continue despite the severity of the pain. Thomas cuts through the bone at his right wrist and amputates the hand cleanly. The episode is not presented as an isolated gesture detached from belief: his repeated recitation immediately precedes it, and the physical injury makes literal the scriptural language that has become central to his thinking.

Afterward, religious imagery continues to shape how Thomas understands his body. He asks Dominick to bring river water from the place where the brothers and Dessa used to walk, because he hopes to wash with it and heal an infection. He describes himself as unclean and seeks purification. The request joins spiritual vocabulary to the practical reality of his wound: the river is at once a remembered place and a possible means of cleansing. Dominick notices the healed-looking scar tissue, but Thomas’s appeal is not simply about appearance; it belongs to his continuing effort to give bodily suffering a religious meaning.

Saints, Signs, and a Divinely Chosen Mission

Thomas’s religious imagination also draws on the lives and powers of saints. He tells Dominick that he prays daily to Saint Agatha, whom he identifies as the patron saint invoked against fire, volcanoes, and cancer. He elaborates on her suffering and sanctity, describing her as a virgin whose breasts were severed and whose body was burned at the stake, and recounting that she stopped a volcanic eruption. In Thomas’s account, martyrdom, miraculous intervention, and protection from illness belong to one charged religious world.

That world also gives Thomas a role in a conspiracy he believes is directed against him. At six in the morning, he wakes Dominick with the claim that the cereal their mother eats has been deliberately contaminated with carcinogens and that Kellogg’s is secretly owned by the Soviets. He reasons that the intended targets are reached through their relatives and says, “I’m on their hit list because I do God’s bidding.” Exposure of the company, he imagines, could make him Time magazine’s Man of the Year and force him into hiding; he even interprets John Lennon’s song “Instant Karma” as a personal message of encouragement. The delusion combines danger with grandiosity: Thomas is both the target of hostile powers and a figure whose divine work could make him famous.

A conversation with a therapist reveals another version of this self-appointed mission. Thomas invokes Christ’s words to Peter about building the church and holding the keys of Heaven, then casts himself as “a fisher of souls” and “the keeper of the keys.” He insists that the role is God’s idea, not his own. The language makes his claims sound less like a chosen ambition than an instruction imposed from beyond himself, even as it grants him exceptional spiritual authority.

Persecution and the Twin Relationship

Thomas’s sense of divine purpose does not keep his attention fixed on an impersonal battle between God and evil. It also turns ordinary relationships into suspected plots. One summer, wearing a stocking cap in the middle of the season, he tells Dominick that he knows what Dominick and two friends have been planning against him. Thomas presents the accusation as settled knowledge; when Dominick challenges it, Thomas insists that he is simply aware. His suspiciousness makes a brother’s friendliness seem like a disguise and shared summer life like a coordinated threat.

A note left for Dominick sharpens that rupture. Thomas addresses it to “Dominick Birdsey, Traitor” and asks, “Do you think it’s easy having your sleep stolen every night? Do you think it’s fun to feel the wings of the Holy Ghost fluttering against your throat?” The Holy Ghost, ordinarily a figure of divine presence, is recast as an intimate, distressing force that invades Thomas’s sleep and body. Dominick cannot make sense of the note. He calls Thomas mad to himself, crumples it, throws it into the toilet, and flushes it away. His rejection of the message does not resolve the fear it conveys; instead, he lies awake constructing arguments for why he is not a rapist and why he deserved not to room with Thomas.

The delusions also unsettle the boundary between the twins. During a later confrontation, Thomas tells Dominick, “You are me.” Dominick denies it, while Thomas smiles with private serenity. The moment makes their closeness feel threatening as well as intimate: Thomas speaks as though their identities are interchangeable, and Dominick responds with fear. His account connects that fear to his own wish, earlier in the summer, to separate from his brother and live more freely. In hindsight, Dominick believes he squandered the remaining weeks when Thomas could still care about other people.

Change, Loss, and Narrative Significance

Dominick does not describe Thomas’s illness as erasing every concern for others. He recognizes that Thomas continues to imagine himself saving civilization from spies and Communists, but says that the voices drown out his capacity to care about Dominick. That distinction preserves a troubling contradiction: Thomas’s grand mission still presents itself as service to humanity, while the person nearest to him feels abandoned by it. On Dominick and Dessa’s wedding morning, he visits Thomas at the hospital in his tuxedo and tells him that, if Thomas were not so ill, he would have been his best man. Thomas had been too unwell to attend the wedding. Dominick’s gesture measures the distance between the brother he wants beside him and the brother the illness has made inaccessible.

The narrative’s account of the delusions is shaped by hindsight. Dominick identifies what he knows about the library incident as knowledge gathered from what Thomas told him and from newspaper coverage appearing alongside reports about Operation Desert Shield. He also recalls his own failure to understand earlier signs: he had been eager to detach himself from Thomas rather than recognize how much of his brother remained present. This retrospective perspective does not claim access to Thomas’s thoughts beyond what he says and does; it sets his reported beliefs beside the consequences Dominick can later recognize.

Across these episodes, religious language performs more than one function. It gives Thomas a vocabulary for fear and illness, supplies him with a heroic identity, and turns an ancient injunction into the rationale for catastrophic self-injury. Yet the same language also makes his suffering legible to Dominick, who remembers both the brother’s mission to save the world and the voices that seemed to shut out the people closest to him. The delusions are therefore central not only to Thomas’s amputation but also to the novel’s portrayal of twin identity, fraternal loyalty, and the painful limits of understanding another person.