In Christianity, a Eucharistic miracle is any miracle involving the Eucharist. The Roman Catholic, Lutheran, Oriental Orthodox, Eastern Orthodox, Moravian and Anglican Churches believe that Christ is really made manifest in the Eucharist and deem this a Eucharistic miracle; however, this is to be distinguished from other manifestations of God. The Catholic Church distinguishes between divine revelation, such as the Eucharist, and private revelation, such as Eucharistic miracles. In general, reported Eucharistic miracles usually consist of unexplainable phenomena such as consecrated Hosts visibly transforming into myocardium tissue, being preserved for extremely long stretches of time, surviving being thrown into fire, bleeding, or even sustaining people for decades.
Sacrarium of the Eucharistic miracle of Lanciano; it is maintained that the upper portion contains the heart tissue, while the lower receptacle contains the pellets of clotted blood.
The Mass at Bolsena, fresco of Raphael (1512, in Raphael Rooms of Apostolic Palace, Vatican City)
Eucharistic miracle of Bolsena in a reliquary made by Ugolino di Vieri
The Sanctuary of the Most Holy Miracle in Santarém, Portugal
A miracle is an event that is inexplicable by natural or scientific laws and accordingly gets attributed to some supernatural or praeternatural cause. Various religions often attribute a phenomenon characterized as miraculous to the actions of a supernatural being, (especially) a deity, a miracle worker, a saint, or a religious leader.
The Miracle of the Slave, a 1548 painting by Tintoretto, from the Gallerie dell'Accademia in Venice. It portrays an episode of the life of Saint Mark, patron saint of Venice, taken from Jacobus de Voragine's Golden Legend. The scene shows a saint intervening to make a slave who is about to be martyred invulnerable.
Rationalist, sceptic, and godman debunker Narendra Nayak during a miracle-exposure program in 2007.