St. Alphonsus de Ligouri
One morning, as soon as he had received the host, he sighed aloud with tears, “What have you done? You have brought me a host without Jesus—an unconsecrated host!” An investigation was undertaken and it was learned that the priest who had celebrated Mass that morning had been so distracted that he had left out everything from the Memento for the Living to the Memento for the Dead in Roman Canon, and so had completely omitted the consecration of the bread and wine. The Saint had detected the absence of Our Lord from the unconsecrated host.
*Manelli, Fr. Stefano M, Jesus Our Eucharistic Love (New Bedford, MA, Immaculate Mediatrix, 1996), p. 71).