'Fortifications' in the Bible

Listen, Israel: Today you are about to cross the Jordan so you can dispossess the nations there, people greater and stronger than you who live in large cities with extremely high fortifications.

Come down from your place of honor; sit on the dry ground, you who live in Dibon. For the one who will destroy Moab will attack you; he will destroy your fortifications.

"I will turn Samaria into a heap of ruins in an open field -- vineyards will be planted there! I will tumble the rubble of her stone walls down into the valley, and tear down her fortifications to their foundations.

All your fortifications will be like fig trees with first-ripe fruit: If they are shaken, their figs will fall into the mouth of the eater!

Draw yourselves water for a siege! Strengthen your fortifications! Trample the mud and tread the clay! Make mud bricks to strengthen your walls!

Nevertheless the Lord will evict her and shove her fortifications into the sea -- she will be consumed by fire.