“King Rehoboam resided in Jerusalem. He built cities for defense in Judah. He built up Bethlehem, Etam, Tekoa, Beth-zur, Soco, Adullam, Gath, Mareshah, Ziph, Adoraim, Lachish, Azekah, Zorah, Aijalon, and Hebron. There were fortified cities in Judah and in Benjamin. He made the fortresses strong. He put commanders in them. They had stores of food, oil, and wine. He also put large shields and spears in all the cities. He made them very strong. So he held Judah and Benjamin.”
There is no other source for this material here. Certainly some of these 15 cities already existed. This was a defensive gesture. He seems to have fortified them with shields, spears, food, commanders, and troops. These cities became strong fortresses against any enemy. Bethlehem was the birthplace of David, just 6 miles south of Jerusalem. Etam was about 2 miles southwest of Bethlehem. Tekoa was about 6 miles south of Bethlehem. Beth-zur was on the main road between Jerusalem and Hebron, about 4 miles north of Hebron, which was about 20 miles south of Jerusalem. Adullam was about 16 miles southwest of Jerusalem and about 10 miles west of Bethlehem. Gath was 1 of the 5 major cities of the Philistines that has been lost, but was on the west side of Judah. Mareshah was also in western Judah, while Ziph was in southern Judah. Adoraim only appears here but probably is a lost southwest town near the sea. Lachish was about 15 miles west of Hebron, probably close to Azekah. Zorah and Aijalon were western cities that were originally in the territory of Dan. About a half of these cities were within 20 miles of Jerusalem. Most of the fortified cities were in the south and west since the Dead Sea was on the east and Benjamin and northern Israel was to the north.