“Nannar was now invoked as Sin–a name which at first appears to have denoted the orb of the moon only–and the name and worship of Sin spread not only in Babylonia, but in other parts of the Semitic world.
His name has been found in an inscription of southern Arabia, and Sinai itself, the sacred mountain, is nothing more than the sanctuary “dedicated to Sin.”
It may be that the worship of the Babylonian Moon-god was brought to the peninsula of Sinai as far back as the days when the sculptors of Tel-loh carved into human shape the blocks of diorite they received from the land of Magan.
However this may be, the Moon-god of Ur, like the city over which he presided, took primary rank among the Babylonians. His worshippers invoked him as the father and creator of both gods and men. It is thus that Nabonidos celebrates his restoration of the temple of Sin at Harran:
“May the gods who dwell in heaven and earth approach the house of Sin, the father who created them.
As for me, Nabonidos, king of Babylon, the completer of this temple, may Sin, the king of the gods of heaven and earth, in the lifting up of his kindly eyes, with joy look upon me month by month at noon and sunset; may he grant me favourable tokens, may he lengthen my days, may he extend my years, may he establish my reign, may he overcome my foes, may he slay my enemies, may he sweep away my opponents.
May Nin-gal, the mother of the mighty gods, in the presence of Sin, her loved one, speak like a mother.
May Samas and Istar, the bright offspring of his heart, to Sin, the father who begat them, speak of blessing.
May Nuzku, the messenger supreme, hearken to my prayer and plead for me.”
The moon existed before the sun.
This is the idea which underlay the religious belief of Accad, exact converse, as it was, of the central idea of the religion of the Semites. It was only where Accadian influence was strong that the Semite could be brought in any way to accept it.
It was only in Babylonia and Assyria and on the coasts of Arabia that the name of Sin was honoured; elsewhere the attributes of the Moon-god were transferred to the goddess Istar, who, as we shall see hereafter, was originally the evening star.
But in Babylonia, Sin became inevitably the father of the gods. His reign extended to the beginning of history; Sargon, as the representative of the Babylonian kings and the adorer of Merodach, speaks of “the remote days of the period of the Moon-god,” which another inscription makes synonymous with “the birth of the land of Assur.”
As the passage I have quoted from Nabonidos shows, Sin was more particularly the father of Samas and Istar, of the Sun-god and the goddess of the evening star.”
A.H. Sayce, Lectures on the Origin and Growth of Religion as Illustrated by the Religion of the Ancient Babylonians, 5th ed., London, 1898, pp. 164-6.