From there the border goes to the south slope of Luz (now called Bethel). Then the border goes down to Ataroth Addar over the mountains south of Lower Beth Horon.
As they fled from the Israelites down the slope of Beth Horon toward Azekah, the Lord threw huge hailstones on them. More died from the hailstones than from Israelite swords.
This is the territory for the families descended from Ephraim. The eastern border of the land they inherited is from Ataroth Addar to Upper Beth Horon.
The border turns and goes around on the west side, south of the mountain that faces Beth Horon, and ends at Kiriath Baal (now called Kiriath Jearim), a city of Judah.