The border of Amorite territory ran from the Scorpion Ascent ¹  to Sela and on up. ² 

and then the border will turn from the south to the Scorpion Ascent, ¹  continue to Zin, and then its direction ²  will be from the south to Kadesh Barnea. Then it will go to Hazar Addar and pass over to Azmon.

extended ¹  south of the Scorpion Ascent, ²  crossed to Zin, went up from the south to Kadesh Barnea, crossed to Hezron, went up to Addar, and turned toward Karka.