When monks sought to poison their abbot Benedict, the cup shattered at the sign of the cross. Gregory the Great records the incident in his early life of the saint and names four informants from Benedict's monastic circle for his accounts. The monks had themselves asked Benedict to be their abbot but resisted his spiritual discipline. At a meal, they offered him poisoned wine. Benedict blessed the vessel; it shattered, and the plot was exposed. He responded with forgiveness and returned to solitude. God's protection and the Christian response to hatred form the unity of this miracle.
Gregory the Great records that Benedict was protected from poisoned wine through the sign of the cross: the glass presented for blessing shattered. Benedict recognized the plot, forgave the monks, and left the community.
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The Monks Ask Benedict to Lead Them
In the second book of his Dialogues, Gregory the Great recounts Benedict's preservation from a poisoning attempt. After his time as a hermit, monks from a neighboring monastery asked Benedict, known for his way of life, to become their abbot. Their previous superior had died. Benedict warned them that their habits did not accord with the ordered spiritual life he would require of them. Nevertheless, at their repeated request, he accepted leadership. The monks soon resisted his discipline. Resistance became a decision to remove the abbot by an attack on his life.[1]
The Poisoned Wine and the Sign of the Cross
Some monks mixed poison into Benedict's wine. At the meal, they held out the drinking vessel for his blessing as usual. Benedict raised his hand and made the sign of the cross. At that moment, the glass shattered, although it was being held some distance away. Gregory describes the break as like the impact of a thrown stone. The hidden plot was thus exposed, and Benedict was prevented from drinking. The pope states the miracle's meaning directly: the vessel of death could not endure the sign of life. The blessing with the cross saved the saint from the poisoned wine.[1]
Benedict Forgives and Leaves
Benedict remained calm. He called the monks together, asked God to forgive them, and recalled his warning when he accepted leadership. He then told them to find another abbot and returned to solitude. His rescue led to no retaliation. Precisely this response is an essential part of the event handed down: the plot was exposed, his life preserved, and yet forgiveness was pronounced for the perpetrators. Benedict recognized that he could not continue to lead this community in the role he had accepted. He remained faithful to God without using the miracle's protection to exercise personal power.[1]
The Cross as the Sign of Life
Gregory contrasts poison as an instrument of death with the cross as the sign of life. Benedict's trust is in Christ, who overcomes death through his sacrifice. His preservation thus becomes part of a Christian witness of life. This is especially clear in forgiveness: the rescued abbot responds to attempted murder with a prayer for the perpetrators. He seeks neither revenge nor public self-glorification. The miracle therefore recalls both God's effective protection and discipleship of the Crucified One. The sign of the cross is a profession of faith and a prayer; its meaning is understood through this relationship with Christ.[1]
Gregory Names His Informants
The Dialogues were written around 593/594, several decades after Benedict's death. In the prologue, Gregory names four men as his informants: Constantinus, who succeeded Benedict in leading the monastery; Valentinianus from the Lateran monastery; Simplicius, another successor; and Honoratus from the community near Subiaco. His life of Benedict thus stands within an identified monastic tradition. This closeness to the monastic circle is important for historical assessment. Gregory does not assign every episode individually to one of the four men. For the poisoned cup, we therefore know the early author and general circle of informants through whom the account survives, but not which individual told him this particular incident.[2]
An Early Life with Spiritual Interpretation
Gregory casts his work as a conversation with the deacon Peter. He recounts concrete events and explains their spiritual significance. In the episode of the poisoned cup, Benedict's preservation leads to reflection on his life before the face of God. Religious interpretation belongs to the author's purpose; it is not a reason to declare the reported event a mere allegory. An actual event can also have a recognizable spiritual meaning. Historical reading must therefore attend to both Gregory's claim to inform readers about Benedict's life and the form in which he reveals that life's meaning to them.[1][2]
The Available Evidence for the Event
The event is accessible through the early text and its identified contexts of transmission. Its wording, date of composition, manuscripts, relationships to sources, and place in Benedict's life can be examined. The glass and wine are no longer available for material or poison analysis. The type and dose of poison therefore cannot be determined from the account. This source situation is typical of many early medieval events: assessment rests on written testimony. For the poisoned cup, the question is what weight should be given to Gregory's closeness to the monastic circle and his informants, and how reliable the particular account is in this context.[1][2]
Witnesses & Investigators
Gregory the Great
Early ecclesiastical narrator
Preserves the early account in the Dialogues and names his monastic informants in the prologue.[1][2]
Constantinus, Valentinianus, Simplicius, and Honoratus
Informants named in the prologue
Gregory names them for his Benedict tradition as a whole; he does not explicitly attribute the cup episode to any one of them individually.[2]
The unfolding story
- Hermit and Sought-After Teacher
Benedict lives in seclusion; his reputation brings the monks to him with their request for an abbot.[2]
- Taking Charge of a Community
At repeated requests, Benedict takes charge of another monastery.[1]
- Poisoned Cup and Withdrawal
The blessed glass shatters; Benedict forgives and leaves the community.[1]
- Writing of the Dialogues
Gregory records the episode as part of his life of Benedict.[1][2]
Ecclesiastical assessment
Recorded in the second book of Gregory the Great's Dialogues, chapter 3. Benedict's veneration as a saint is established in the Church; this does not constitute a modern scientific examination report for the individual account of the poisoned cup.
Objections & Answers
Is the poisoned cup merely an image of the cross's victory?
Gregory reports the incident as part of a particular life and names his monastic informants in the prologue. The fact that he also explains its spiritual meaning does not make the event a freely invented allegory. An actual rescue can show the power of the cross and lead to forgiveness. Proximity, transmission, and the source's form matter for historical assessment. Gregory does not assign the episode to any individual among his four informants; an additional complete witness list is therefore unavailable. The early, identified tradition nevertheless remains a positive reason to take the account seriously.[1][2]
Can a glass not also break naturally?
Yes. The mere breaking of a glass would not in itself be sufficient proof of a miracle. Gregory's account, however, connects the concealed poisoning attempt, the sign of the cross, the break, and Benedict's recognition in a particular sequence. A natural explanation would need to account for this connection rather than merely citing the general occurrence of glass breaking. The material, temperature, and possible prior damage can no longer be examined. Assessment therefore concerns the credibility of the historical testimony. Those who trust it because of its early origin and circle of transmission have a reasoned basis for interpreting it as God's protection.[1]
Meaning for faith
The shattered poisoned cup is attested early through Gregory the Great and his identified monastic tradition. Through the sign of the cross, Benedict is protected from the attack. His response makes the miracle's Christian meaning visible: rescue gives rise to forgiveness and renewed trust in God.[1][2]
How Miracles in the Lives of the Saints Are Examined
Stigmata, bilocation, and material changes require different examinations.
Methods of examination and ecclesiastical procedure →Sources & Evidence
Information on accessibility and scope helps you assess the evidence for yourself.
- [1] Dialogues, Book II, Chapter 3: The Broken Poisoned Cup
Primary text of the transmitted episode; historical translation, not a modern investigation report.
Open source · archive.osb.org ↗ - [2] Dialogues, Book II: Prologue to the Life of Benedict
Primary text on Gregory's source basis; names no individual statements concerning the poisoned cup.
Open source · archive.osb.org ↗


