דברי הימים ב, פרק י״ב, פסוק ג׳

The military campaign launched against Jerusalem featured a massive display of power. The sheer magnitude of the attacking force rendered the region's prepared fortified cities completely useless, as the invaders successfully captured them [מלבי״ם]. The advancing army was immense, deploying twelve hundred chariots and sixty thousand horsemen, backed by an unmeasurable crowd of soldiers [ביאור שטיינזלץ].

This Egyptian military machine did not march alone. It was reinforced by allied foreign nations, specifically the Lubim, Sukkiim, and Kushites [מצודת ציון]. The Sukkiim were likely inhabitants of a district bordering Egypt, while the Kushites originated from a Sudanese kingdom that had taken control over Egypt [ביאור שטיינזלץ].