5 Rehoboam continued to live in Jerusalem but built up a defense system for Judah all around: 6 in Bethlehem, Etam, Tekoa, 7 Beth Zur, Soco, Adullam, 8 Gath, Mareshah, Ziph, 9 Adoraim, Lachish, Azekah, 10 Zorah, Aijalon, and Hebron - a line of defense protecting Judah and Benjamin. 11 He beefed up the fortifications, appointed commanders, and put in supplies of food, olive oil, and wine. 12 He installed arms - large shields and spears - in all the forts, making them very strong. So Judah and Benjamin were secure for the time.
Matthew Henry's Commentary on 2 Chronicles 11:5-12
Commentary on 2 Chronicles 11:1-12
(Read 2 Chronicles 11:1-12)
A few good words might have prevented the rebellion of Rehoboam's subjects; but all the force of his kingdom cannot bring them back. And it is in vain to contend with the purpose of God, when it is made known to us. Even those who are destitute of true faith, will at times pay some regard to the word of God, and be kept by it from wrong actions, to which they are prone by nature.