The army of Judah was not able to force out the Jebusites living in Jerusalem. So today there are still Jebusites living among the people of Judah in Jerusalem.
Then the border went through the Valley of Ben Hinnom beside the southern side of the Jebusite city (that is, Jerusalem). There the border went to the top of the hill on the west side of Hinnom Valley. This was at the northern end of Rephaim Valley.