Commentaries:
Jamieson, Fausset, and Brown
built cities for defence in Judah—This is evidently used as the name of the southern kingdom. Rehoboam, having now a bitter enemy in Israel, deemed it prudent to lose no time in fortifying several cities that lay along the frontier of his kingdom. Jeroboam, on his side, took a similar precaution (I Kings 12:25). Of the fifteen cities named, Aijalon, now Yalo, and Zorah, now Surah, between Jerusalem and Jabneh [ROBINSON], lay within the province of Benjamin. Gath, though a Philistine city, had been subject to Solomon. And Etham, which was on the border of Simeon, now incorporated with the kingdom of Israel, was fortified to repel danger from that quarter. These fortresses Rehoboam placed under able commanders and stocked them with provisions and military stores, sufficient, if necessary, to stand a siege. In the crippled state of his kingdom, he seems to have been afraid lest it might be made the prey of some powerful neighbors.
Other Jamieson, Fausset, and Brown entries containing 2 Chronicles 11:5:
Jeremiah 34:7
Daniel 4:30
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