Dear reader, Joseph Smith claimed he translated the Book of Mormon plates by using the Urim and Thummim. An instrument used by the ancient Old Testament priesthood to communicate with God. I have for your reading and research pleasure, an article written by Rabbi Geoffrey W. Dennis. He knows his stuff and I advise you read his article and you judge if Joseph Smith might have been able to translate the plates using said instrument.
Urim and Thummim
by Rabbi Geoffrey W. Dennis
Other interpreters suggest that the Urim and Thummim were separate objects that were both kept in a pouch on the breastplate. In the Bible we read about one individual who made a counterfeit breastplate for his personal cult. For his breastplate he substituted teraphim for the Urim and Thummim (Judges 17-18; Hos. 3:4). This is a tantalizing but frustrating bit of data, because we know even less about the teraphim then we do about the Urim and Thummim. Consequently, the association of the two objects does not shed much light on either, no pun intended. The best evidence is that the two may have both been made of light-reflecting stone; Mesopotamian sources also mention an elmeshu stone used by the gods for oracular purposes.
The context for its mention in Scripture indicates the Urim and Thummim was only used for questions of grave importance, usually connected to the function of the state, such as whether and when to go to war, though there is one passage in Numbers that hints at the possibility it was used for more mundane questions, such as resolving difficult legal questions. The answers given by the Urim and Thummim recorded in the Bible were full sentences, suggesting either that the device was merely an aid to oracular prophecy, or that the Rabbis were correct in their claim that it spelled out messages from the letters on the breastplate.
Mention of the Urim and Thummim ceases early in the history of Israel, indicating that it was no longer in use at the rise of classical prophecy (8th Century BCE). There is some indication that it was reintroduced briefly during the Persian period, but it quickly disappears from the records. Since then it has become part and parcel of Western occult lore; Joseph Smith claimed to have used the Urim and Thummim to read the "Reformed Egyptian" language of the golden book given him by the angel Moroni. (DDS 4QQ376, 4QpIsa; Antiquities; B. Yoma; Exodus Rabbah; Number Rabbah; Sifrei Numbers; Targum Pesudo-Jonathan; PdRE; Zohar; Ramban on Ex. 28).
Article copyright 2004 Geoffrey Dennis.
In ancient Israelite religion and culture, Urim and Thummim (Hebrew: האורים והתומים, Standard haʾUrim vəhaTummim Tiberian hāʾÛrîm wəhatTummîm) is a phrase from the Hebrew Bible associated with the Hoshen (High Priest's breastplate), divination in general, and cleromancy in particular. Most scholars suspect that the phrase refers to specific objects involved in the divination. 
Contents[hide]1 Name and Meaning
2 Form and Function
3 History of Use
4 Latter Day Saint movement
5 References by popular culture
6 See also
7 Notes and citations
8 External links
תּוּמִים (Thummim) is widely considered to be derived from the consonantal root תּמִם (t-m-m), meaning faultless, while אוּרִים (Urim) has traditionally been taken to derive from a root meaning lights; these derivations are reflected in the Neqqudot of the masoretic text. In consequence, Urim and Thummim has traditionally been translated as lights and perfections (by Theodotion, for example), or, by taking the phrase allegorically, as meaning revelation and truth, or doctrine and truth (it appears in this form in the Vulgate, in the writing of Jerome, and in the Hexapla).
However, although at face value the words are plural, the context suggests they are pluralis intensivus - singular words which are pluralised to enhance their apparent majesty. The singular forms - ur and tumm - have been connected by some early scholars with the Babylonian terms urtu and tamitu, meaning oracle and command, respectively. Many scholars now believe that אוּרִים (Urim) simply derives from the Hebrew term אּרּרִים (Arrim), meaning curses, and thus that Urim and Thummim essentially means cursed or faultless, in reference to the deity's view of an accused - in other words that Urim and Thummim concern the question of innocent or guilty?.
 Form and Function
A passage - 1 Samuel 14:41 - in the Books of Samuel is regarded by biblical scholars as key to understanding the Urim and Thummim; the passage describes an attempt to identify a sinner via divination, by repeatedly splitting the people into two groups and identifying which group contains the sinner. In the version of this passage in the masoretic text, it merely describes Saul and Jonathan being separated from the rest of the people, and lots being cast between them; the Septuagint version, however, states that Urim would indicate Saul and Jonathan, while Thummim would indicate the people. In the Septuagint, a previous verse uses a phrase which is usually translated as inquired of God, which is significant as the grammatical form of the Hebrew implies that the inquiry was performed by objects being manipulated; scholars view it as evident from these verses and versions that cleromancy was involved, and that Urim and Thummim were the names of the objects being cast.
The description of the clothing of the Jewish high priest in the Book of Exodus portrays the Urim and Thummim as being put into the sacred breastplate, worn by the high priest over the Ephod. Where the Bible elsewhere describes an Ephod being used for divination, scholars presume that it is referring to use of the Urim and Thummim in conjunction with the Ephod, as the these seem to be intimately connected with it; similarly where non-prophets are portrayed as asking Yahweh for guidance, and the advice isn't described as given by visions, scholars think that Urim and Thummim were the medium implied. In all but two cases, the question is one which is effectively answered by a simple yes or no; a number of scholars believe that the two exceptions to this pattern, which give more complex answers, were originally also just sequences of yes/no questions, but became corrupted by later editing.
There is no description of the form of the Urim and Thummim in the passage describing the high priest's vestments, and a number of scholars believe that the author of the passage, which textual scholars attribute to the priestly source, wasn't actually entirely aware of what they were either. Nevertheless, the passage does describe them as being put into the breastplate, which scholars think implies they were objects put into some sort of pouch within it, and then, while out of view, one (or one side, if the Urim and Thummim was a single object) was chosen by touch and withdrawn or thrown out; since the Urim and Thummim were put inside this pouch, they were presumably small and fairly flat, and were possibly tablets of wood or of bone. With the view of scholars that Urim essentially means guilty and Thummim essentially means innocent, this would imply that the purpose of the Urim and Thummim was an ordeal to confirm or deny suspected guilt; if the Urim was selected it meant guilt, while selection of the Thummim would mean innocence.
According to Islamic sources, there was a similar form of divination among the Arabs prior to the beginning of Islam. There, two arrow shafts (without heads or feathers), on one of which was written command and the other prohibition or similar, were kept in a container, and stored in the Kaaba at Mecca; whenever someone wished to know whether to get married, go on a journey, or to make some other similar decision, one of the Kaaba's guardians would randomly pull one of the arrow shafts out of the container, and the word written upon it was said to indicate the will of the god concerning the matter in question. Sometimes a third, blank, arrow shaft would be used, to represent the refusal of the deity to give an answer.
According to classical rabbinical literature, in order for the Urim and Thummim to give an answer, it was first necessary for the individual to stand facing the fully dressed high priest, and vocalise the question briefly and in a simple way, though it wasn't necessary for it to be loud enough for anyone else to hear it. The Talmudic rabbis, argued that Urim and Thummim were words written on the sacred breastplate; according to someone, the breastplate had to be activated by taking a parchment with the Tetragrammaton inscribed upon it, and inserting the parchment into a slot in the breastplate. Most of the Talmudic rabbis, and Josephus, following the belief that Urim meant lights, argued that divination by Urim and Thummim involved questions being answered by great rays of light shining out of certain jewels on the breastplate; each jewel was taken to represent different letters, and the sequence of lighting thus would spell out an answer (though there were 22 letters in the Hebrew alphabet, and only 12 jewels on the breastplate); two Talmudic rabbis, however, argued that the jewels themselves moved in a way that made them stand out from the rest, or even moved themselves into groups to form words.
 History of Use1 Samuel 28:6 states that God refused to answer Saul by dreams, by Urim, or by prophets. Saul was a Benjamite; his 'yes' was Thummim. A priest is a Levite; his 'yes' is Urim. Six tribes were on one stone, and six tribes were on the other.
A passage of the Books of Samuel mentions three methods of divine communication - dreams, prophets, and the Urim and Thummim; the first two of these are also mentioned copiously in Assyrian and Babylonian literature, and such literature also mentions Tablets of Destiny, which are similar in some ways to the Urim and Thummim. The Tablets of Destiny had to rest on the breast of deities mediating between the other gods and mankind in order to function, while the Urim and Thummim had to rest within the breastplate of the priest mediating between Yahweh and mankind. Marduk was said to have put his seal on the Tablets of Destiny, while the Israelite breastplate had a jewelled stone upon it for each of the Israelite tribes, which may derive from the same principle. Like the Urim and Thummim, the Tablets of Destiny came into use when the fate of king and nation was concerned. According to a minority of archaeologists, the Israelites emerged as a subculture from within Canaanite society, and not as an invading force from outside, and therefore it would be natural for them to have used similar religious practices to other Semitic nations, and scholars suspect that the concept of Urim and Thummim was originally derived from the Tablets of Destiny.
The first biblical reference to Urim and Thummim is the description in the Book of Exodus concerning the high priest's vestments; the chronologically earliest passage mentioning them, according to textual scholars, is in the Book of Hosea, where it is implied, by reference to the Ephod, that the Urim and Thummim were fundamental elements in the popular form of the Israelite religion, in the mid 8th century BC. Consulting the Urim and Thummim was said to be permitted for determining territorial boundaries, and was said to be required, in addition to permission from the king or a prophet, if there was an intention to expand Jerusalem or the Temple in Jerusalem; however, these rabbinical sources did question, or at least tried to justify, why Urim and Thummim would be required when a prophet was also present. The classical rabbinical writers argued that the Urim and Thummim were only permitted to be consulted by very prominent figures such as army generals, the most senior of court figures, and kings, and the only questions which could be raised were those which were asked for the benefit of the people as a whole.
Although Josephus argues that the Urim and Thummim continued to be used until the era of the Maccabees, Talmudic sources are unanimous in agreeing that the Urim and Thummim were lost much earlier, when Jerusalem was sacked by the Babylonians. In a passage from the part of the Book of Ezra which overlaps with the Book of Nehemiah, it is mentioned that individuals who were unable to prove, after the Babylonian captivity had ended, that they were descended from the priesthood before the captivity began, were required to wait until priests in possession of Urim and Thummim were discovered; this would appear to confirm the Talmudic view that the Urim and Thummim had by then been lost. Indeed, since the priestly source, which textual scholars date to a couple of centuries prior to the captivity, doesn't appear to know what the Urim and Thummim looked like, and there is no mention of the Urim and Thummim in the deuteronomic history beyond the death of David, biblical scholars suspect that use of them decayed some time before the Babylonian conquest, probably as a result of the growing influence at the time of prophets.
 Latter Day Saint movement
Main articles: Urim and Thummim (Latter Day Saints) and Seer stone (Latter Day Saints)
Joseph Smith, Jr., founder of the Latter Day Saint movement, said he used "interpreters" in order to translate the Book of Mormon from the Golden Plates. The "interpreters" he described as a pair of stones, fastened to a breastplate joined in a form similar to that of a large pair of spectacles. Smith later referred to this object as the Urim and Thummim. In 1823, Smith said that the angel Moroni, who had told him about the Golden Plates, also told him about the Urim and Thummim, "two stones in silver bows" fastened to a breastplate, and the angel intimated that they had been prepared by God to aid in the translation of the Golden Plates. Smith's mother, Lucy Mack Smith, described these Urim and Thummim as being like "two smooth three-cornered diamonds."
Joseph Smith and his early Mormon contemporaries also referred to a separate "seer stone", also used for translation; but in some cases it is unclear whether Smith's contemporaries are referring to the Urim and Thummim or to the seer stone, because they seem to have used the terms interchangeably. Smith also said he used these devices to assist him in receiving other divine revelations, including some of the sections of the Doctrine and Covenants and portions of the Joseph Smith Translation of the Bible. Although many of Smith's associates said they saw him use the devices, only Oliver Cowdery seems to have attempted to use them to receive his own revelation. Mormons believe that Smith's Urim and Thummim were functionally identical to the biblical Urim and Thummim, but there is no evidence that the latter were ever used to translate unknown texts.
 References by popular culture
In accordance with the traditional view that Urim and Thummim should be translated as "Light and Truth", the Latin equivalent of this latter phrase — Lux et Veritas — has been used for several university mottoes. Lux et Veritas is the motto of Indiana University and the University of Montana; similarly, Northeastern University's motto is Lux, Veritas, Virtus (Light, Truth, Virtue). Though Urim and Thummim itself is emblazoned across the open book pictured on the Yale University coat of arms (a legacy of Yale College president Ezra Stiles), Lux et Veritas appears below on a banner.
The Urim and Thummim are also afforded some value as artifacts in some modern fiction:
A treasure hunt for the Urim and Thummim forms the central plot of the John Bellairs novel The Revenge of the Wizard's Ghost
Their apparent desecration by an unknown vandal is a theme in the Arthur Conan Doyle short story The Jew's Breastplate.
In the Christian fiction novel The Face of God, by Bill Myers, the pastor Daniel Lawson and terrorist Ibrahim el-Magd race to find the Urim and Thummim, as well as the twelve stones of the sacred breastplate, in order to hear God's voice.
In the novel The Alchemist, by Paulo Coelho, the king of Salem gives the main character Santiago two stones that the king calls Urim and Thummim. One of the stones is white, which is said to signify no, and the other is black, said to signify yes; a significance applicable when the stones are asked an appropriate question and drawn from a bag. The king himself had removed the stones from his shining golden breastplate.
The traditional rabbinical descriptions of the function of Urim and Thummim — transmitting messages by glowing — has been claimed by some proponents of paleocontact hypothesis to be evidence in support of that hypothesis.