Shekel (Akkadian: šiqlu or siqlu; Hebrew: שקל, pl. shekels or sheqalim) is any of several ancient units of weight or of currency. Initially, it may have referred to a weight of barley. This shekel was about 180 grains (11 grams or .35 troy ounces).
The Hebrew word shekel is based on the verbal root for "weighing" (ŠQL), cognate to the Akkadian šiqlu or siqlu, a unit of weight equivalent to the Sumerian gin2. Use of the word was first attested in c. 2150 BC during the Akkadian Empire under the reign of Naram-Sin, and later in c. 1700 BC in the Code of Hammurabi. The ŠQL root is found in the Hebrew words for "to weigh" (shaqal), "weight" (mishqal) and "consideration" (shiqqul), and is related to the TQL root in Aramaic and the ΘQL root in Arabic, such as the words thiqal (the weight) or Mithqal (unit of weight). The famous writing on the wall in the Biblical Book of Daniel includes a cryptic use of the word in Aramaic: "Mene, mene, teqel, u-farsin". The word "shekel" came in to the English language via the Hebrew Bible, where it is first used in the Book of Genesis.
The earliest shekels were a unit of weight, used as other units such as grams and troy ounces for trading before the advent of coins. Exodus 30:24 notes that the measures of the ingredients for the holy anointing oil were to be calculated using the Shekel of the Sanctuary (see also Exodus 38:24–26, and similarly at Numbers 3:47 for payment for the redemption of 273 first-born males  and at Numbers 7:12–88 for the offerings of the leaders of the tribes of Israel), suggesting that there were other common measures of shekel in use, or at least that the Temple authorities defined a standard for the shekel to be used for Temple purposes.
Coins were used and may have been invented by the early Anatolian traders who stamped their marks to avoid weighing each time used. Herodotus states that the first coinage was issued by Croesus, King of Lydia, spreading to the golden Daric (worth 20 sigloi or shekel), issued by the Persian Empire and the silver Athenian obol and drachma. Early coins were money stamped with an official seal to certify their weight. Silver ingots, some with markings were issued. Later authorities decided who designed coins. As with many ancient units, the shekel had a variety of values depending on era, government and region; weights between 7 and 17 grams and values of 11, 14, and 17 grams are common.
The shekel was common among western Semitic peoples. Moabites, Edomites, and Phoenicians used the shekel, although proper coinage developed very late. Carthaginian coinage was based on the shekel and may have preceded its home town of Tyre in issuing proper coins. The Aramaic tekel, similar to the Hebrew shekel, used in the writing on the wall during the feast of Belshazzar according to the Book of Daniel and defined as weighed, shares a common root with the word shekel and may even additionally attest to its original usage as a weight.
The Carthaginian or Punic shekel was typically around 7.2 grams in silver and 7.5 grams in gold (suggesting an exchange rate of 12:1). They were apparently first developed on Sicily during the mid-4th century BC. They were particularly associated with the payment of Carthage's mercenary armies and were repeatedly debased over the course of each of the Punic Wars, although the Carthaginian Empire's expansion into Spain under the Barcids before the Second and recovery under Hannibal before the Third permitted improving the amount and quality of the currency. Throughout, it was more common for Carthage's holdings in North Africa to employ bronze or no coinage except when paying mercenary armies and for most of the specie to circulate in Spain, Sardinia, and Sicily.
The Tyrian shekel began to be issued c. 300 BC. Owing to the relative purity of their silver, they were the preferred medium of payment for the Temple tax in Jerusalem despite their royal and pagan imagery. The money changers assaulted by Jesus in the New Testament are those who exchanged worshippers' baser common currency for such shekels and they have been suggested as a possible coin used as the "30 pieces of silver" in the New Testament.
The Israeli shekel (properly sheqel) replaced the Israeli lira or pound in 1980. Its currency sign was ⟨⟩, although it was more commonly denominated as S or IS. It was subdivided into 100 new agoras or agorot. It suffered from hyperinflation and was quickly replaced.
The new shekel replaced it in 1985. Its currency sign is ⟨ ₪ ⟩, although it is often denominated as S or NS. It is subdivided into 100 agoras or agorot. Both Israeli shekels are purely units of currency and not weight. With the 2014 series of notes, the Bank of Israel abandoned the transcriptions Sheqel and Sheqalim in favor of the standard English forms Shekel and Shekels.
- Dilke, Oswald Ashton Wentworth (1987). Mathematics and measurement. University of California Press. p. 46. Retrieved 6 February 2011.
- Genesis 23:15-16
- See Bemidbar (parsha)#Sixth reading — Numbers 3:40–51
- "Siglos", Encyclopædia Britannica.
- DIA 1964.
- Crawford, Michael Hewson (1985), Coinage and Money under the Roman Republic: Italy and the Mediterranean Economy, The Library of Numismatics, Berkeley: University of California Press, ISBN 0-520-05506-3.
- Tenney, Merril ed., The Zondervan Pictorial Encyclopedia of the Bible, vol. 5, "Weights and Measures," Grand Rapids, MI: Zondervan, 1976.
- Bronson, Bennet (November 1976), "Cash, Cannon, and Cowrie Shells: The Nonmodern Moneys of the World", Bulletin, Vol. 47, No. 10, Chicago: Field Museum of Natural History, pp. 3–15.
- Wiseman, Donald J (1958), Illustrations from Biblical Archaeology, London: Tyndale Press, pp. 87—89.
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