Judges 1:18-21

18Also [the warriors of] Judah captured Gaza with its territory and Ashkelon with its territory and Ekron with its territory.

19The Lord was with Judah, and [the tribe of] Judah took possession of the hill country, but they could not dispossess and drive out those inhabiting the valley because they had iron chariots.

20Then they gave Hebron to Caleb, as Moses had said, and he drove out from there the three sons of Anak.

21But the sons of Benjamin did not drive out the Jebusites who inhabited Jerusalem; so the Jebusites have lived with the sons of Benjamin in Jerusalem to this day.