Joshua 18:13-14

The border went over from there toward Luz, to the side of Luz (which is Bethel) southward; and the border descended to Ataroth Addar, near the hill that lies on the south side of Lower Beth Horon. Then the border extended around the west side to the south, from the hill that lies before Beth Horon southward; and it ended at Kirjath Baal (which is Kirjath Jearim), a city of the children of Judah. This was the west side.