EWTN Vatican on Instagram: "The Solemnity of Corpus Christi, established by Pope Urban IV in 1264, commemorates the true presence of Christ in the Eucharist. Its origins trace back to a 13th-century priest who, plagued by doubt, made a pilgrimage to Rome. On his return, while celebrating Mass in Bolsena, Italy, the consecrated Host began to bleed, staining the altar linens. Shocked, the priest placed everything in the tabernacle and later informed Pope Urban IV, then in nearby Orvieto. The pope