Do that which is good, and no harm shall come to thee.
– Arthur Miller
The Crucible, Act 3. John Proctor give this advise to Mary Warren, quoting what the angel Raphael said to the boy Tobias. This is an allusion to a story from the Book of Tobit, one of the books of the Apocrypha, which form part of the Catholic Bible but are omitted from the Protestant. The story tells of two Israelite families, that of the blind Tobit in Nineveh and of the abandoned Sarah in Ecbatana who is plagued by a demon. The archangel Raphael helps Tobit defeat the demon. There is a tragic irony in what Proctor advises Mary. The audience knows that good people are being arrested and accused, while evil continues and those doing harm are free to point fingers at the innocent.