The Mystical Presence: A Vindication Of The Reformed Or Calvinistic Doctrine Of The Holy Eucharist is a book written by John Williamson Nevin and published in 1867. The book is a defense of the Reformed or Calvinistic doctrine of the Holy Eucharist, which is the belief that the bread and wine of the Eucharist are symbols of Christ's body and blood rather than being literally transformed into them. Nevin argues that this doctrine is not only biblical...