Chronicles II 8:5

5 And he built Baethoron the upper, and Baethoron the lower, strong cities, —they had walls, gates, and bars;

Chronicles II 8:5 Meaning and Commentary

2 Chronicles 8:5

Also he built Bethhoron the upper, and Bethhoron the nether,
&c.] Only mention is made of the latter in ( 1 Kings 9:17 ) ,

fenced cities, with walls, gates, and bars;
fortified cities in the tribe of Ephraim.

Chronicles II 8:5 In-Context

3 And Solomon came to Baesoba, and fortified it.
4 And he built Thoedmor in the wilderness, and all the strong cities which he built in Emath.
5 And he built Baethoron the upper, and Baethoron the lower, strong cities, —they had walls, gates, and bars;
6 and Balaath, and all the strong cities which Solomon had, and all his chariot cities, and cities of horsemen, and all things that Solomon desired according to his desire of building, in Jerusalem, and in Libanus, and in all his kingdom.
7 all the people that was left of the Chettites, and the Amorites, and the Pherezites, and the Evites, and the Jebusites, who are not of Israel,

The Brenton translation of the Septuagint is in the public domain.