דברי הימים ב, פרק י״א, פסוק י׳

Securing a kingdom requires a carefully planned network of defenses rather than relying on a single stronghold. The strategic fortification of key locations across different regions ensures the safety of the entire land. Building this defense system involved strengthening various strategic cities that were divided among the tribal territories.

The city of Zorah, for instance, originally belonged to the tribe of Dan. However, after the members of that tribe left their land and migrated north, the city was integrated into the kingdom's new array of protected strongholds [ביאור שטיינזלץ].

These key locations, which included cities like Aijalon and Hebron, were not clustered in a single area. Instead, they were deliberately scattered across the landscape. Some were situated within the territory of Judah, while others were placed in the land of Benjamin, ensuring that each area had its own protection [מצודת דוד, ביאור שטיינזלץ]. The primary approach among commentators is that these designated locations were heavily reinforced. They were specifically built to serve as powerful military bases and strongholds designed to protect the broader region.