2 Chronicles 11:5-12
5-12Rehoboam continued to live in Jerusalem but built up a defense system for Judah all around: in Bethlehem, Etam, Tekoa, Beth Zur, Soco, Adullam, Gath, Mareshah, Ziph, Adoraim, Lachish, Azekah, Zorah, Aijalon, and Hebron—a line of defense protecting Judah and Benjamin. He beefed up the fortifications, appointed commanders, and put in supplies of food, olive oil, and wine. He installed arms—large shields and spears—in all the forts, making them very strong. So Judah and Benjamin were secure for the time.
13-17The priests and Levites from all over Israel came and made themselves available to Rehoboam. The Levites left their pastures and properties and moved to Judah and Jerusalem because Jeroboam and his sons had dismissed them from the priesthood of God and replaced them with his own priests to preside over the worship centers at which he had installed goat and calf demon-idols. Everyone from all the tribes of Israel who determined to seek the God of Israel migrated with the priests and Levites to Jerusalem to worship there, sacrificing to the God of their ancestors. That gave a tremendous boost to the kingdom of Judah. They stuck with Rehoboam son of Solomon for three years, loyal to the ways of David and Solomon for this period.