The Evil and Danger of Apostasy: As Exemplified in the History of Francis Spira is a book written by John Poynder and published in 1832. The book tells the story of Francis Spira, a 16th-century Italian lawyer who renounced his Protestant faith and returned to the Catholic Church, only to suffer from a crisis of conscience and eventually die in despair. Poynder uses Spira's story as a cautionary tale to warn readers about the dangers of apostasy,...