Babylonia

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Babylonia is the ancient civilization of southern Mesopotamia, named for its chief city, Babylon, on the Euphrates in what is now central Iraq. It rose to prominence in the early second millennium BCE — the reign of Hammurabi, who unified the region under his law code, is conventionally dated to the eighteenth century BCE — and the name came to stand for the whole settled culture of the lower Tigris-Euphrates plain, heir to the older Sumerian world and writing in Akkadian on clay in cuneiform script. To speak of Babylonia is to speak less of a fixed border than of a center of gravity: a southern alluvial heartland whose temples, scribal schools, and calendar held their shape across a long succession of dynasties, conquests, and revivals, so that a clay tablet ruled in one millennium could still be copied and consulted in the next.

The political arc

The civilization’s history is a long sequence of rise, fall, and deliberate restoration, and the four landmarks that organize it are widely spaced. The Old Babylonian state of Hammurabi, in the eighteenth century BCE, gathered the cities of the south under a single crown and issued the great stele of laws — close to three hundred case rulings, framed by a prologue in which the king receives his mandate to make justice shine in the land. The dynasty did not outlast its founder by many generations. The south then passed through long stretches of foreign and divided rule, most durably under the Kassite kings of the later second millennium, who governed Babylonia for some four centuries and presided over the period in which much of its classic religious literature was fixed in writing. Through all of it Marduk, the city-god of Babylon, rose from a local deity to head of the pantheon, his supremacy narrated in the creation epic Enūma eliš and reaffirmed each spring in the akītu, the New Year festival that bound the cosmos to the king.

The brief, brilliant climax came late. In 626 BCE Nabopolassar, the founder of what the Greeks would call the Chaldean dynasty, broke free of Assyrian control; within two decades he and his Median allies had destroyed Nineveh and inherited the empire of Assyria. His son Nebuchadnezzar II (reigned c. 605–562 BCE) made Babylon the largest and most magnificent city in the world — the Ishtar Gate glazed in lapis-blue brick, the processional way, the great ziggurat Etemenanki, and the terraced gardens later writers would count among the wonders of the world. It was Nebuchadnezzar who, after the siege of Jerusalem, carried the people of Judah into the Babylonian exile, an episode the Bible renders as the defining catastrophe of its history and the crucible in which much of its scripture took shape. The Neo-Babylonian empire was short-lived. Its last king, Nabonidus, spent years away from the capital at the oasis of Teima, neglecting Marduk’s cult; in 539 BCE the city opened to Cyrus of Persia with little resistance, and Babylonia passed into the Achaemenid empire. It was governed afterward by Persians, then by Alexander — who died in Babylon in 323 BCE — and then by his Seleucid successors, declining slowly through the Hellenistic centuries as the new royal foundations on the Tigris drew away its population. The temples, though, kept working almost to the end: the latest dated cuneiform tablets, astronomical records, run into the first century BCE, the last flicker of a literate tradition three thousand years old.

The science of the sky

What the wider world inherited from Babylonia was, above all, the science of the sky. Its scribes treated the heavens as a text — šiṭir šamê, the writing of heaven — legible to those trained to read it, and they read it with an exactness that has no real parallel in the ancient world. From at least the seventh century BCE the astronomers of Babylon kept the astronomical diaries: night-by-night records of the positions of the moon and planets against the fixed stars, of eclipses and conjunctions, set down alongside the weather, the level of the Euphrates, the going price of barley and wool, and notices of the king’s doings and the affairs of the city. The surviving diaries span from about 652 BCE to about 61 BCE — close to six centuries of sustained observation, the longest continuous program of dated scientific record in the ancient world, of which only a fraction has come down to us. From these accumulated data the scribes built mathematical astronomy proper: arithmetical schemes, the so-called System A and System B of the procedure texts, that predicted lunar and planetary phenomena — new moons, eclipse possibilities, the stations and risings of the planets — without any geometric model of the heavens, by tabulating how a quantity rose and fell from one interval to the next. They divided the ecliptic into the twelve equal thirty-degree signs of the zodiac. Their predictions were good enough that the diaries record not only what was seen but what had been computed in advance.

This was, from the start, a science woven into divination. The same celestial record that fed the arithmetic also fed the great omen series Enūma Anu Enlil, seven decades of tablets carrying thousands of conditional readings of the form if this sign appears in the sky, then this follows for the king and the land. The celestial diviner, the ṭupšar Enūma Anu Enlil, worked beside the exorcist-priest and the lamentation-singer; the Neo-Assyrian court correspondence preserves these scholars reporting an eclipse to the king and recommending the ritual response. The omens concerned the realm, not the individual. The decisive turn came in the later fifth century BCE, when the same techniques were applied to a single human life: the horoscope, a tablet recording the positions of the heavenly bodies at the moment of a child’s birth as a key to its fortune. The earliest cuneiform horoscopes date to around 410 BCE — and with them the claim that the configuration of the sky at a birth shapes a destiny enters the written record for the first time, the seed of the whole later art of astrology. The specifically Babylonian elements — the zodiac of equal signs, the System A and System B schemes, certain planetary dignities — passed into Greek technical astrology in the late Hellenistic period; the elaborate apparatus of houses, lots, and aspect doctrine that surrounds them in the Greek charts is a Hellenistic creation built upon that Babylonian foundation, not a direct inheritance from it.

”Chaldean”: the science and the legend

The Greeks who met this learning called its practitioners Chaldeans. The word began as an ethnonym — the Kaldu were a people of the southern marshes from whom Nabopolassar’s dynasty sprang — and it slid, in Greek and Latin usage, into a professional name for the astronomer-diviner, and then into a byword for occult wisdom in general. By the late Republic a “Chaldean” in Rome was simply an astrologer, his Babylonian descent more often claimed than real. The reputation traveled far beyond anything the temple scribes would have recognized, and it soon detached itself entirely from the cuneiform science that had earned it.

Two distinct things came to share the name, and scholarship is careful to keep them apart. The first is the genuine Mesopotamian celestial science, recoverable from the tablets — patient, technical, astonishingly long-lived. The second is the legend of Chaldean magic, a free-floating prestige attached to the East as a source of secret antiquity. The clearest case of the gap is the Chaldean Oracles, a Greek hexameter text of the second century CE: ascribed to one Julian the Theurgist under Marcus Aurelius, it is “Chaldean” by self-presentation only, a product of Middle Platonist metaphysics and theurgy with little Babylonian content. Yet under that borrowed name it became scripture for the Neoplatonists — Iamblichus wove it into his defense of ritual ascent, Proclus wrote a vast commentary on it, Damascius, the last head of the Athenian school, still read it — and through the Byzantine epitomes it survived to be reordered in the Renaissance and folded into the prisca theologia, the ancient theology that traced a single revealed wisdom back through Zoroaster, Hermes, and the Chaldeans to the dawn of the world. The whole chain — text, oracle, and reception — is treated under the Chaldean Oracles tradition.

The legend put down other roots too. In ninth-century Iraq, the encyclopedia known as the Nabataean Agriculture anchored its astral and magical lore not in Hermes but in a line of antediluvian Chaldean-Nabataean sages, a parallel construction of deep Babylonian antiquity surveyed under the pseudo-Babylonian Nabataean Hermetica; the star-worshipping scholars of Harran likewise traded on the same eastern prestige, treated under the Sabian-Harranian astral religion. What all of these share is a structure: the recovery of a conveniently irrecoverable past, in which “Chaldea” stands less for a place than for the idea of an original wisdom. The historical conduit between the cuneiform world and the Greek was narrower and more concrete — the Babylonian priest Berossus, who around 290 BCE wrote a Greek history of his homeland for the Seleucid court, transmitting Babylonian cosmogony, king-lists, and flood lore to Mediterranean readers. Berossus is the real thing the legend kept invoking; the distance between his sober Babyloniaca and the “Chaldean Book of Numbers” that later esotericists imagined is exactly the distance between Babylonia and its reputation.

The textual record and its recovery

For most of two thousand years Babylonia was known only at second hand — through the Hebrew Bible, through the Greek excerptors of Berossus, through the astrologers who flew the Chaldean flag. The civilization itself was unreadable. That changed in the nineteenth century, when the excavation of the Assyrian capitals and the decipherment of cuneiform between roughly 1850 and 1880 reopened the archive directly. George Smith’s announcement in 1872 of a Babylonian flood tablet, and his Chaldean Account of Genesis (1876), framed the early reception around comparison with scripture; Morris Jastrow’s The Religion of Babylonia and Assyria (Ginn, 1898) was the first synthetic compendium to integrate the magical, divinatory, and astral material — both works now in the public domain and readable as documents in the history of the field, their evolutionary and apologetic assumptions long since superseded. A short-lived school, the Panbabylonism of Hugo Winckler and Alfred Jeremias around 1900, pressed the opposite extreme — that all the world’s mythologies descended from a single Babylonian astral system — and was decisively refuted on astronomical grounds by the Jesuit historian of astronomy Franz Xaver Kugler before the First World War. The same period saw Babylon enter modern esotericism in earnest, as H. P. Blavatsky drew on Smith and Sayce to build a “Chaldean” stratum into her perennial synthesis, multiplying the legend even as the philologists were dismantling it.

The modern recovery rests on a body of critical editions. The diaries were edited by Abraham Sachs and Hermann Hunger as Astronomical Diaries and Related Texts from Babylonia (Austrian Academy of Sciences, from 1988), the foundation for all study of the observational record. The standard synthesis of the celestial sciences as an intellectual tradition in their own right — neither a primitive forerunner of Greek astronomy nor a hidden mystical system — is Francesca Rochberg’s The Heavenly Writing: Divination, Horoscopy, and Astronomy in Mesopotamian Culture (Cambridge University Press, 2004), reviewed for the Bryn Mawr Classical Review by Eleanor Robson; Rochberg’s Babylonian Horoscopes (American Philosophical Society, 1998) edits the thirty surviving natal tablets. Ulla Koch-Westenholz’s Mesopotamian Astrology (Museum Tusculanum, 1995) traces the divinatory tradition from the third millennium to the Seleucid era, and Erica Reiner’s Astral Magic in Babylonia (American Philosophical Society, 1995) gathers the medical and apotropaic material in which stars and stones were bound together in therapy. The one-volume orientations to the history and religion are Paul-Alain Beaulieu’s A History of Babylon, 2200 BC – AD 75 (Wiley-Blackwell, 2018) and Jean Bottéro’s Religion in Ancient Mesopotamia (University of Chicago Press, 2001). For the Greek and theurgic afterlife of the name, Isaac Cory’s Ancient Fragments (1832) collects both Berossus and the Chaldean Oracles in early English translation, and G. R. S. Mead’s The Chaldæan Oracles (1908) renders the hexameter fragments — both hosted here, and both witnesses to the reputation rather than the science.

The city itself became a symbol long before it became a ruin. The Bible’s Babylon of pride and confusion, the tower that scattered the languages of the earth and the empire that broke Jerusalem, hardened into the great image of the arrogant world — set against the other Babylon, the one whose astronomers watched the same sky for six hundred years and wrote down what they saw before they computed where it would go next.

→ In the library: Cory — Ancient Fragments (1832; incl. Berossus and the Chaldean Oracles) · Mead — The Chaldæan Oracles (1908)

→ Related: Mesopotamia · Achaemenid Empire · Divination · Neoplatonism · Babylon · Sumer · Astrology · Berossus · Chaldean Oracles Tradition · Pseudo Babylonian Nabataean Hermetica · Prisca Theologia · Mesopotamian Religion Sumerian Akkadian · Sabian Harranian Astral Religion