After the split, the Northern Kingdom (Israel) and the Southern Kingdom (Judah) fought brutal border wars against each other. To win, Judah would sometimes pay the neighboring Empire of Aram-Damascus (modern Syria) to attack Israel from the north.

Despite these wars, the Northern Kingdom grew incredibly wealthy under the Omride Dynasty (a family of kings who ruled in the 800s BCE). Archaeologists have found their capital, Samaria, filled with ashlar masonry (perfectly cut, rectangular stones) and expensive ivory carvings. They got rich by forming an alliance with the wealthy Phoenician city of Tyre (sealed by the marriage of King Ahab to the Tyrian princess Jezebel). This alliance brought foreign money and the worship of the Tyrian god Ba’al Melqart into Israel. The Omrides also expanded their military, conquering the neighboring nation of Moab to control its trade routes.

We know exactly what happened next because of incredible ancient monuments:

• The Battle against Assyria (853 BCE): To stop the massive Neo-Assyrian Empire from invading, King Ahab teamed up with other nations. An Assyrian monument called the Kurkh Monolith records that Ahab brought 2,000 chariots to the Battle of Qarqar, successfully pausing the Assyrian invasion.
• The Moabite Rebellion: When Ahab died, Moab fought back. The Mesha Stele (a stone written by the King of Moab) brags about slaughtering the Israelite troops and winning back their independence.
• Coups and Submission (841 BCE): The anger over the foreign Phoenician alliance and the constant wars led to a coup (a violent government overthrow) led by an Israelite general named Jehu. Backed by the prophets Elijah and Elisha—who were leading a social rebellion against foreign wealth and religious corruption—Jehu murdered the Omride family. To protect himself, Jehu surrendered to Assyria. The Black Obelisk of Shalmaneser III literally shows a carving of King Jehu bowing face-down in the dirt before the Assyrian emperor.
• Chaos in the South: The two kingdoms were so closely tied together that the Northern coup caused chaos in the South. Athaliah, a royal woman from the North who married into the Southern royal family, seized the throne of Judah and killed her rivals, ruling as queen until she was overthrown by the priests.

The 8th-Century Economic Boom and Inequality: By the 700s BCE, both kingdoms experienced an economic boom by producing olive oil and wine for international trade. But this wealth was hoarded by the elite. We know this from the Samaria Ostraca—ancient tax receipts found in the royal palace showing luxury goods flowing from rural farms directly to rich government officials. The peasant class (‘Am Ha’aretz) was crushed by debt and lost their land. The famous biblical prophets Amos, Micah, and Isaiah were not just preaching abstract religion; they were protesting this massive social inequality and government corruption.

The Evolution of Religion: It is important to know that early Israelites were not strictly monotheistic (believing in only one god). They practiced monolatry or henotheism—believing many gods exist, but choosing to worship YHWH as their national god. Ancient inscriptions found at Kuntillet Ajrud explicitly mention “YHWH and his Asherah,” showing they believed God had a wife or divine partner. Finding thousands of small goddess statues in regular homes proves that syncretism (blending different religious beliefs together) was the everyday reality for normal people.