'Fortresses' in the Bible

And he shall turn his face toward the fortresses of his own land; and he shall stumble and fall, and not be found.

And in his place will he honour the +god of fortresses; and a +god whom his fathers knew not will he honour with gold and silver, and with precious stones and pleasant things.

And he will practise in the strongholds of fortresses with a strange +god: whoso acknowledgeth him will he increase with glory; and he shall cause them to rule over the many, and shall divide the land to them for a reward.