Cleromancy is a form of divination using sortition, casting of lots, or casting bones or stones, in which an outcome is determined by means that normally would be consideredrandom, such as the rolling of dice, but are sometimes believed to reveal the will of God, or other supernatural entities.

In classical civilization[edit]

In ancient Rome fortunes were told through the casting of lots or sortes.

In Judeo-Christian tradition[edit]

Casting of lots occurs relatively frequently in the Bible, and many biblical scholars think that the Urim and Thummim served this purpose. In the Hebrew Bible, there are several cases where lots were cast as a means of determining God's mind:

1. In the Book of Leviticus 16:8, God commands Moses, "And Aaron shall cast lots upon the two goats; one lot for the LORD, and the other lot for the scapegoat."
2. In Joshua 7, a guilty party (Achan) is probably found by lot and executed.
3. In the Book of Joshua 18:6, Joshua says, "Ye shall therefore describe the land into seven parts, and bring the description hither to me, that I may cast lots for you here before the LORD our God." This action is done in order to know God's will as to the dividing of land between the seven tribes of Israel who had not yet "received their inheritance." (Joshua 18:2).
4. Also in the First Book of Samuel 14:42, lots are used to determine that it was Jonathan, Saul's son, who broke the oath that Saul made, "Cursed be the man that eateth any food until evening, that I may be avenged on mine enemies." (1 Samuel 14:24).
5. In the Book of Jonah 1:7, the desperate sailors cast lots to see whose god is responsible for creating the storm: "Then the sailors said to each other, “Come, let us cast lots to find out who is responsible for this calamity.” They cast lots and the lot fell on Jonah."

Other places in the Hebrew Bible relevant to divination:

• Book of Proverbs 16:33: The lot is cast into the lap, but its every decision is from Yahweh and 18:18: The lot settles disputes, and keeps strong ones apart..
• Book of Leviticus 19:26 KJV "... neither shall you practice enchantment, nor observe times."^[1] The original Hebrew word for enchantment, as found in Strong's Concordance, is pronounced naw-khash' in English. The translation given by Strong's is "to practice divination, divine, observe signs, learn by experience, diligently observe, practice fortunetelling, take as an omen"; and "1.to practice divination 2.to observe the signs or omens". Times in the original Hebrew is pronounced aw-nan' in English. Its translation in Strong's is "to make appear, produce, bring (clouds), to practise soothsaying, conjure;" and "1. to observe times, practice soothsaying or spiritism or magic or augury or witchcraft 2. soothsayer, enchanter, sorceress, diviner, fortuneteller, barbarian...". In the Hebrew-Interlinear Bible, the verse reads, "not you shall augur and not you shall consult cloud".
• Deuteronomy 18:10 ..let no one be found among you who [qasam qesem], performs [onan], [nahash], or [kashaph].^[2] qasam qesem literally means distributes distributions, and may possibly refer to cleromancy. kashaph seems to mean mutter, although the Septuagint renders the same phrase as pharmakia (poison), so it may refer to magic potions
• In the Book of Esther, Haman casts lots to decide the date on which to exterminate the Jews of Shushan; the Jewish festival of Purim is a remembrance of the subsequent chain of events.
• In I Chronicles 26:13 guard duties are assigned by lot.
• To Christian doctrine perhaps the most significant mention of lots is in the Book of Psalms, 22:18 "They divide my garments among them, and for my clothing they cast lots." This came to be regarded as a prophecy connecting that psalm and the one that follows to the crucifixion and resurrection of Jesus, since all four gospels (for example, John19:24) tell of the Roman soldiers at Jesus's crucifixion casting lots to see who would take possession of his clothing. (That final act of profanation became the central theme of "The Robe", a 1953 film starring Richard Burton.)

One other notable example in the New Testament occurs in the Acts of the Apostles 1:23-26 where the eleven remaining apostles cast lots to determine whether Matthias orBarsabbas (surnamed Justus) would be chosen to replace Judas.

In the Eastern Orthodox Church this method of selection is still occasionally used. In 1917 Metropolitan Tikhon was elected Patriarch of Moscow by the drawing of lots. In the Coptic Orthodox Church, drawing lots is still used to choose the Coptic Pope, most recently done in November 2012 to choose Pope Tawadros II. German Pietist Christians in the 18th Century often followed the New Testament precedent of drawing Lots to determine the will of God. This was often done by selecting a random Bible passage. The most extensive use of drawing of Lots in the Pietist tradition may have been Count von Zinzendorf and the Moravian Brethren of Herrnhut who drew lots for many purposes, including selection of church sites, approval of missionaries, the election of bishops and many others. This practice was greatly curtailed after the General Synod of the worldwide Moravian Unity in 1818 and finally discontinued in the 1880s.