This article has multiple issues. Please help improve it or discuss these issues on the talk page. ( Learn how and when to remove these template messages)( Learn how and when to remove this template message)
|Part of a series on|
Sīn // or Suen ( Akkadian: 𒂗𒍪 EN.ZU, pronounced Su'en, Sîn),  ( Assyrian Aramaic (Classical Syriac): ܣܝܼܢ Sin or ܣܝܼܢܵܐ Sina)   or Nannar ( Sumerian: 𒀭𒋀𒆠 DŠEŠ.KI, DNANNAR) was the god of the moon in the Mesopotamian religions of Sumer, Akkad, Assyria, and Babylonia. Nannar is a Sumerian deity, the son of Enlil and Ninlil, and became identified with the Semitic Sīn. The two chief seats of Nannar's/Sīn's worship were Ur in the south of Mesopotamia and Harran in the north. A moon god by the same name was later worshipped in South Arabia.
The original meaning of the name Nanna is unknown. The earliest spelling found in Ur and Uruk is D LAK-32.NA (where NA is to be understood as a phonetic complement). The name of Ur, spelled (cuneiform: 𒋀𒀕𒆠) LAK-32.UNUGKI=URIM2KI, is itself derived from the theonym, and means "the abode (UNUG) of Nanna (LAK-32)". He was also the father of Ishkur.
The pre-classical sign LAK-32 later collapses with ŠEŠ (the ideogram for "brother"), and the classical Sumerian spelling is DŠEŠ.KI, with the phonetic reading na-an-na. The technical term for the crescent moon could also refer to the deity, (cuneiform: 𒀭𒌓𒊬 DU4.SAKAR). Later, the name is spelled logographically as DNANNA.
The Semitic moon god Su'en/Sin is in origin a separate deity from Sumerian Nanna, but from the Akkadian Empire period the two undergo syncretization and are identified. The occasional Assyrian spelling of DNANNA-ar DSu'en-e is due to association with Akkadian na-an-na-ru "illuminator, lamp", an epitheton of the moon god. The name of the Assyrian moon god Su'en/Sîn is usually spelled as DEN.ZU, or simply with the numeral 30, (cuneiform: 𒀭𒌍 DXXX). 
|Part of the myth series on|
Religions of the|
ancient Near East
|Pre-Islamic Arabian deities|
|Arabian deities of foreign origin|
He is commonly designated as En-zu, which means "lord of wisdom". During the period (c. 2600–2400 BC) that Ur exercised a large measure of supremacy over the Euphrates valley, Sin was naturally regarded as the head of the pantheon[ citation needed] . It is to this period that we must trace such designations of Sin as "father of the gods"[ citation needed], "chief of the gods"[ citation needed], "creator of all things"[ citation needed] , and the like. The "wisdom" personified by the moon-god is likewise an expression of the science of astronomy or the practice of astrology, in which the observation of the moon's phases is an important factor.
His wife was Ningal ("Great Lady"), who bore him Utu/ Shamash ("Sun") and Inanna/ Ishtar (the goddess of the planet Venus). The tendency to centralize the powers of the universe leads to the establishment of the doctrine of a triad consisting of Sin/Nanna and his children.
Sin had a beard made of lapis lazuli and rode on a winged bull. The bull was one of his symbols, through his father, Enlil, "Bull of Heaven", along with the crescent and the tripod (which may be a lamp-stand). On cylinder seals, he is represented as an old man with a flowing beard and the crescent symbol. In the astral-theological system he is represented by the number 30 and the moon. This number probably refers to the average number of days (correctly around 29.53) in a lunar month, as measured between successive new moons.
An important Sumerian text ("Enlil and Ninlil")  tells of the descent of Enlil and Ninlil, pregnant with Nanna/Sin, into the underworld. There, three "substitutions" are given to allow the ascent of Nanna/Sin. The story shows some similarities to the text known as "The Descent of Inanna".
Nanna's chief sanctuary at Ur was named E-gish-shir-gal, " house of the great light" (cuneiform: 𒂍𒄑𒋓𒃲 e2-giš-šir-gal). It was at Ur that the role of the En-Priestess developed. This was an extremely powerful role held by a princess, most notably Enheduanna, daughter of King Sargon of Akkad, and was the primary cult role associated with the cult of Nanna/Sin. 
Sin also had a sanctuary at the city of Harran, named E-hul-hul, "house of joys" (cuneiform: 𒂍𒄾𒄾 e2-ḫul2-ḫul2). The cult of the moon-god spread to other centers, so that temples to him are found in all the large cities of Babylonia and Assyria. A sanctuary for Sin with Syriac inscriptions invoking his name dating to the 2nd and 3rd centuries CE was found at Sumatar Harabesi in the Tektek Mountains, not far from Harran and Edessa.
- "Cuneiform dictionnary". zcu.cz.
- "The Comprehensive Aramaic Lexicon". cal.huc.edu. Retrieved 2021-01-17.
- "Dukhrana Lexicon Lookup". dukhrana.com. Retrieved 2021-01-17.
- Reallexikon der Assyriologie, 1997, ISBN 978-3-11-014809-1, p.360
- "Enlil and Ninlil: translation".
- Hall, M. D. A Study of Sumerian Moon God Nanna/Suen. Phd thesis, University of Pennyslviania, 1985, p. 227]
- Manfred Lurker (2015). A Dictionary of Gods and Goddesses, Devils and Demons. Routledge. p. 227. ISBN 9781136106286.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). " Sin (moon-god)". Encyclopædia Britannica. 25 (11th ed.). Cambridge University Press. p. 138.
|Wikimedia Commons has media related to Nanna (god).|
|Wikiquote has quotations related to: Sin (mythology)|
- Ancient Mesopotamian Gods and Goddesses: Nanna/Suen/Sin (god)
- Tamara M. Green, The City of the Moon God: Religious Traditions of Harran. E.J. Brill, Leiden, 1992, 232 pages. ISBN 90-04-09513-6
- The Ur and Harran Latitudes, and Göbekli Tepe