
France · 13th Century
On Easter Sunday, April 2, 1290, a man named Jonathas who hated the Catholic Faith and did not believe in the Real Presence of Christ in the Holy Eucharist obtained possession of a consecrated Host. In an act of deliberate desecration, he stabbed the Host with a knife. To his shock and terror, the Host began to bleed, with the Blood filling the container in which he had placed the Host—a visible manifestation of Christ's presence.
Frightened by this supernatural response, Jonathas threw the bleeding Host into a fire, hoping to destroy the evidence and end the miracle. However, the Host miraculously floated above the flames, refusing to be consumed by the fire. In growing desperation, the man grabbed the levitating Host from above the fire and threw it into a pot of boiling water, attempting to destroy it through another element. But the Host rose out of the boiling water and transformed, taking the visible form of a crucifix hovering in the air.
Terrified by these escalating miracles—bleeding, surviving fire, surviving boiling water, levitation, and transformation into a crucifix—Jonathas placed the Host in the basin of a pious woman. She immediately recognized the sacred nature of what she had received and brought the Host to her parish priest. The Italian historian Giovanni Villani, a respected chronicler of medieval European history, reported all the principal facts of the miracle in Book VII, Chapter 136 of his celebrated History of Florence, providing contemporary historical documentation.
The ecclesiastical authorities conducted an investigation, and according to tradition, Pope Boniface VIII (who had been serving as Cardinal Caetani and papal legate to a church council in Paris in 1290, the year the miracle occurred) later issued a Bull authorizing the transformation of the desecrator's house into an oratory dedicated to reparation for the sacrilege. King Philip IV (Philip the Fair) confiscated the house, which became known as 'The House of Miracles,' and this confiscation was registered in a bill of sale from 1291. A chapel was built at the site of the desecration and is now known as the Cloître et église des Billettes, which still stands in Paris today as a lasting memorial to God's manifestation of His presence in the Eucharist even in the face of violent desecration.
This miracle has received explicit recognition from Vatican/papal authority through formal decrees, papal bulls, or official Holy See approval.
The ecclesiastical authorities investigated and approved the miracle. According to tradition, Pope Boniface VIII issued a Bull authorizing the transformation of the desecrator's house into an oratory. However, no papal bull, decree of the Congregation for the Doctrine of the Faith, or other magisterial pronouncement concerning this specific miracle appears in official Church documents.
Recognition status cross-referenced using Magisterium AI, a third-party tool that searches a corpus of Catholic Church documents. This does not constitute official Church verification.
Official Carlo Acutis exhibition page with complete narrative including all miracle elements and Billettes chapel information
Comprehensive PDF with historical sources including Giovanni Villani Chronicle and details about Pope Boniface VIII bull; Site has expired SSL certificate but content is authoritative
Catholic media article providing theological context and addressing historical antisemitic dimensions of the account
Authoritative biographical entry on Pope Boniface VIII who authorized the chapel transformation