After a political fracture severed the northern 10 tribes from the south, Rehoboam retreated to Jerusalem. He immediately mobilized an army of 180,000 conscripts from the tribes of Judah and Benjamin. His intent centered on marching north to reclaim the lost territories by force. A prophet named Shemaiah intervened and halted the campaign. The southern kingdom absorbed this massive reserve of manpower and shifted its focus inward.
This military buildup occurred in the years following 930 b.c. The border between the rival factions settled 10 miles north of Jerusalem. Rehoboam responded by transforming 15 rural towns into military hubs. These settlements formed a defensive crescent stretching from Aijalon in the northwest down to Hebron in the southern hills. Laborers reinforced city walls and installed heavy gates with iron bars. Workers packed local storehouses to the rafters with surplus oil, wine, and grain.
This network of supply depots required lethal armaments to protect the stockpiles. Commanders filled the arsenals in cities like Lachish with heavy shields and thrusting spears. Lachish guarded the southwestern approach from the coastal plains and required a massive garrison to secure the trade routes. The fortress featured a gatehouse spanning over 50 feet in width to bottleneck invading forces. Sentries positioned on the high ramparts could spot enemy movements from miles away.
A high wall serves equally to lock the enemy out and trap the occupant inside.
That sense of confinement grew as religious refugees flooded into these enclosed cities. Jeroboam purged the Levite priests from his northern territories and replaced them with loyalists. These exiled priests migrated south and swelled the population of Judah. Rehoboam utilized this demographic shift to solidify his political grip. He consolidated his royal lineage by taking 18 wives and producing 28 sons, scattering his heirs across every fortified district to maintain absolute control.