Built - “Rebuilt,” or “repaired” (as in 2 Chronicles 8:2). The two Beth-borons were both ancient cities (see Joshua 10:10 note).
Related Commentaries of 2 Chronicles 8:5
2 Chronicles 8:5
5 Also he built Bethhoron the upper, and Bethhoron the nether, fenced cities, with walls, gates, and bars;