Judges 1:17-19

17 And Judah went with Simeon his brother, and they killed the Canaanites who lived in Zephath and destroyed it. And the name of the city [was called] Hormah.

18 Also Judah took Gaza with its border, and Askelon with its border, and Ekron with its border.

19 And the LORD was with Judah. And he took possession of the mountain. But he could not drive out those who lived in the valley, because they had chariots of iron.