Bibliomancy is the use of books in divination. The method of employing sacred books (especially specific words and verses) for 'magical medicine', for removing negative entities, or for divination is widespread in many religions of the world:
- What the Vedas were to the Hindus, Homer to the Greeks, and Ovid and Virgil to the Romans, the Tanakh is to the Jews, the Old and New Testaments to the Christians, and the Quran to the Muslims. -- Jewish Encyclopedia, 1906 edition
According to the Oxford English Dictionary, the word bibliomancy (etymologically from biblio- "books" and -mancy "divination by means of") "divination by books, or by verses of the Bible" was first recorded in 1753 (Chambers' Cyclopedia). Sometimes this term is used synonymously with stichomancy (from sticho- "row, line, verse") "divination by lines of verse in books taken at hazard", which was first recorded ca. 1693 (Urquhart's Rabelais).
Bibliomancy compares with rhapsodomancy (from rhapsode "poem, song, ode") "divination by reading a random passage from a poem". A historical precedent was the ancient Roman practice of sortes "sortilege, divination by drawing lots", which specialized into sortes Homerica, sortes Virgilianae, and sortes Sanctorum, using the texts of Homer, Virgil, and the Bible.
Although some Christian and Jewish groups believe that it forbids divination in general, Leviticus strictly forbids nahash and onan. The literal meaning of nahash is hissing, though it can be extended to whispering, and it has historically been understood to refer to enchantment; onan literally translates as clouds, possibly referring to nephomancy.
According to the Shulchan Aruch (Rema, Yoreh Deah, 179), it is not a committal of the sin of necromancy to divine an answer using the "goral", being the practice of opening the Chumash to see an answer to a question, or asking a child for the first piece of scripture that comes to his mind.
- A book is picked that is believed to hold truth.
- It is balanced on its spine and allowed to fall open.
- A passage is picked, with the eyes closed.
Among Christians, the Bible is most commonly used (in the Sortes Sanctorum), and in Islamic cultures the Qur'an. In the Middle Ages the use of Virgil's Aeneid was common in Europe and known as the sortes Virgilianae. In the classical world the sortes Virgilianae and sortes Homerica (using the Iliad and Odyssey) were used.
In Iran, Bibliomancy using the dīvān of Hafiz is the most popular for this kind of divination, but by no means the only kind. The Qur'an, as well as the Masnawī of Rumi may also be used. Fāl-e Ḥafez may be used for one or more persons. In group bibliomancy, the dīvān will be opened at random, and beginning with the ode of the page that one chances upon, each ode will be read in the name of one of the individuals in the group. The ode is the individual’s fāl. Assigning of the odes to individuals depends on the order in which the individuals are seated and is never random. One or three verses from the ode following each person’s fāl is called the šāhed, which is read after the recitation of the fāl. According to another tradition the šāhed is the first or the seventh verse from the ode following the fāl . An ode which had already been used for one individual in the group is disqualified from serving as the fāl for a second time.
Because book owners frequently have favorite passages that the books open themselves to, some practitioners use dice or another randomiser to choose the page to be opened. This practice was formalized by the use of coins or yarrow stalks in consulting the I Ching. Tarot divination can also be considered a form of bibliomancy, with the main difference that the cards (pages) are unbound.
There is a prevalent practice among certain, particularly messianic, members of Chabad-Lubavitch Chasidic movement to use the Igrot Kodesh, a thirty-volume collection of letters written by their leader Menachem Mendel Schneerson for guidance.
Another variant requires the selection of a random book from a library before selecting the random passage from that book. This also holds if a book has fallen down from a shelf on its own. English poet Robert Browning used this method to ask about the fate of his enchantment to Elizabeth Barret (later known as Elizabeth Barret Browning). He was at first disappointed to choose the book "Cerutti’s Italian Grammar", but on randomly opening it his eyes fell on the following sentence: ‘if we love in the other world as we do in this, I shall love thee to eternity' (which was a translation exercise).
Bibliomancy in fiction 
In The Book of Webster's (1993) by J. N. Williamson, the sociopathic protagonist Dell uses the dictionary to guide his actions.
In 'The Ash Tree' by M.R. James, bibliomancy is used to produce a warning message from the bible.
The popular 'lonelygirl15' internet fiction series mentions the use of bibliomancy as part of the main character's religious beliefs.
In the novel Man in the High Castle by Philip K. Dick, every major character uses bibliomancy, mainly by casting yarrow stalks in conjunction with the I Ching. Dick himself reportedly used this process for deciding key points in the story, even going so far as to blaming the I Ching for plot developments that he himself did not particularly care for.
In Wilkie Collins' 1868 novel The Moonstone, the narrator Gabriel Betteredge routinely practices bibliomancy using the pages of Daniel Defoe's Robinson Crusoe. This is a good example of intertextuality, since Crusoe himself uses bibliomancy in his journey toward redemption.
In Augusten Burroughs' Running With Scissors, bilbiomancy (referred to as "Bible-dipping") is used by one of the main characters.
- Bibliomancy is a school of magic available in the horror roleplaying game Unknown Armies.
See also 
- Oxford English Dictionary, 2nd edition, 1989.
- Leviticus 19:26
- OMIDSALAR, MAHMOUD. "DIVINATION". Encyclopedia Iranica. Retrieved 2009-04-05.
- The Letters of Robert Browning and Elizabeth Barrett, Vol, 1, p. 470
|Look up bibliomancy in Wiktionary, the free dictionary.|
- Bibliomancy from the Jewish Encyclopedia
- Bibliomancy Oracle
- Free Bibliomancy readings from multiple literary sources at bibliomancy.org
- Free Online Stichomancy Readings at Facade.com
- Bibliomancy from A Word A Day