Judges 1:19 KJV
And the Lord was with Judah; and he drave out the inhabitants of the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron.
Judges 1:19, King James Version
In context
18 Also Judah took Gaza with the coast thereof, and Askelon with the coast thereof, and Ekron with the coast thereof.
19 And the Lord was with Judah; and he drave out the inhabitants of the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron.
20 And they gave Hebron unto Caleb, as Moses said: and he expelled thence the three sons of Anak.