How did political power help make Marduk the leading god of Babylon?

The elevation of Marduk to the status of leading god was intrinsically linked to the political rise of Babylon. As the city-state expanded its influence and became a dominant political and administrative center in Mesopotamia, its chief deity’s status was elevated to reflect this newfound power.12

This process was reinforced through religious literature and state ideology:

• Divine Legitimacy: The creation epic Enuma elish served to establish the divinely ordained dominance of Babylon. By depicting Marduk as the victor over the forces of chaos (the goddess Tiamat), the text mirrored the city’s own political ascendancy. In the ancient world, a dominant city-state was believed to possess a more powerful god than those under its dominion; thus, elevating Marduk effectively elevated the status of Babylon itself.1
• Institutional Support: The priesthood of Marduk became a powerful political faction. Kings who sought to maintain stability, such as Sargon II, often secured the support of the priesthood by restoring privileges to the great temples. Conversely, rulers who alienated the priesthood or neglected Marduk’s traditions—such as Nabonidus—faced significant internal opposition, which ultimately weakened their political standing.34