What happened
In 1405 at Bois-Seigneur-Isaac, a consecrated host that had been stolen and pierced was found to have bled, soaking the corporal beneath it.
The Bishop of Cambrai declared the event genuine in 1410 and granted an indulgence; the relic was honored with a solemn procession, and Pope Martin V approved the monastery built there in 1424.
Where it stands
Declared genuine by the Bishop of Cambrai (1410, with an indulgence); the monastery approved by Pope Martin V (1424).
Church recognition is a judgment about devotion — not a claim of scientific proof. We keep the two distinct.
Visit it
Bois-Seigneur-Isaac, Walloon Brabant, Belgium
View on Google Maps →“One soldier thrust his lance into his side, and immediately blood and water flowed out.”
John 19:34
Sources
- International Exhibition of Eucharistic Miracles (St. Carlo Acutis) Devotional source
The bigger picture
This case is one witness in a much longer story — the Catholic teaching that Christ is truly, substantially present in the Eucharist.