'Fortified' in the Bible

Now behold, I have made you today as a fortified city and as a pillar of iron and as walls of bronze against the whole land, to the kings of Judah, to its princes, to its priests and to the people of the land.

Declare in Judah and proclaim in Jerusalem, and say,“Blow the trumpet in the land;Cry aloud and say,‘Assemble yourselves, and let us goInto the fortified cities.’

“They will devour your harvest and your food;They will devour your sons and your daughters;They will devour your flocks and your herds;They will devour your vines and your fig trees;They will demolish with the sword your fortified cities in which you trust.

Why are we sitting still?Assemble yourselves, and let us go into the fortified citiesAnd let us perish there,Because the Lord our God has doomed usAnd given us poisoned water to drink,For we have sinned against the Lord.

“Then I will make you to this peopleA fortified wall of bronze;And though they fight against you,They will not prevail over you;For I am with you to save youAnd deliver you,” declares the Lord.

when the army of the king of Babylon was fighting against Jerusalem and against all the remaining cities of Judah, that is, Lachish and Azekah, for they alone remained as fortified cities among the cities of Judah.

“I will set fire to the wall of Damascus,And it will devour the fortified towers of Ben-hadad.”