The Fall of Babylon and the Persian Conquest of the Neo-Babylonian Empire
The fall of Babylon occurred in 539 BCE, when the Persian Empire conquered the Neo-Babylonian Empire. The success of the Persian campaign, led by Cyrus the Great, brought an end to the reign of the last native dynasty of Mesopotamia and gave the Persians control over the rest of the Fertile Crescent.
Leadership and Political Conditions
Nabonidus, the final Babylonian king and son of the Assyrian priestess Adad-guppi, had ascended to the throne by overthrowing his predecessor Labashi-Marduk in 556. For long periods, he would entrust rule to his son and crown prince Belshazzar, whose poor performance as a politician lost him the support of the priesthood and even the military class, in spite of his capability as a soldier. Several factors led to the fall of Babylon as the population of Babylonia became increasingly disaffected with Nabonidus. The priesthood of Marduk hated him because he suppressed Marduk's cult and elevated the cult of the moon-god Sin. He excited a strong feeling against himself by attempting to centralize the religion of Babylonia in the temple of Marduk at Babylon, and thus alienated the local priesthoods. Furthermore, the military despised his scholarly tastes. He seemed to have left the defense of the kingdom to Belshazzar (a capable soldier but poor diplomat who alienated the political elite), while occupying himself with studies like excavating foundation records of the temples to determine their dates. Nabonidus and Belshazzar's Assyrian rather than Babylonian heritage is also likely to have added to this resentment.
The Rise of the Achaemenid Empire
To the east, the Persians' political and military power had been growing at a rapid pace under the Achaemenid dynasty, and by 540, Cyrus had initiated an offensive campaign against the Neo-Babylonian Empire. In the sixth year of Nabonidus (550/549) Cyrus the Great, the Achaemenid Persian king of Anshan in Elam, revolted against his suzerain Astyages, king of the Manda or Medes, at Ecbatana. Astyages' army betrayed him, and Cyrus established his rule at Ecbatana, putting an end to the Median Empire and elevating the Persians among the Iranic peoples. Three years later, Cyrus became king of all Persia and was engaged in a campaign to put down a revolt among the Assyrians in 547 BC. In 540, according to Dougherty and S.Smith, Cyrus invaded Syria, most of Babylon's eastern possessions. In a few months, many of Nabonidus's vassals were under Persian authority.
Invasion and Historical Accounts
In 539 BC, Cyrus invaded Babylonia. In late 539, the Persian army secured a crucial victory in the Battle of Opis, thereafter triumphantly entering the city of Babylon. Historical reconstruction of the fall of Babylon has been problematic, due to the inconsistencies between the various source documents. Both the Babylonian Chronicles and the Cyrus Cylinder describe Babylon being taken "without battle", whereas the Greek historians Herodotus and Xenophon report that the city was besieged. The biblical Book of Daniel notes that Belshazzar was killed.
Conflict Summary
The following table provides an overview of the conflict and its participants based on historical records:
| Category | Details |
|---|---|
| Date | 540–539 BCE |
| Location | Babylon, Babylonia, Mesopotamia (modern-day Iraq) |
| Result | Persian victory; Fall of the Neo-Babylonian Empire |
| Persian Leaders | Cyrus the Great, Gobryas |
| Babylonian Leaders | Nabonidus, Belshazzar |
Biblical and Religious Perspectives
Biblical history reminds Christians to serve and build a kingdom not of this world. For at least 66 years, from 605 to 539 B.C., Daniel lived and worked under Babylonian authority, always trying to serve a strange public while remaining true to God. God banned soothsayers from ancient Israel, yet Daniel was appointed to oversee the enchanters, the sorcerers, and the other wise men of Babylon. As a stranger in a strange land, he had to coexist with them—which makes him a role model for us.
Regarding the period of exile, Jeremiah—the prophet whose godly fury led to our word jeremiad—wrote to Israelites living in the anti-Eden, the city of Babylon: "Build houses and settle down; plant gardens and eat what they produce. Also, seek the peace and prosperity of the city to which I have carried you into exile. Pray to the Lord for it, because if it prospers, you too will prosper." (Jer. 29:4–5, 7). This highlights how the ancient Israelites’ charter was designed to protect the purity of the land God had given them, yet they had to adapt while living as religious minorities in unholy lands dominated by non-Christians.