'Fortress' in the Bible

And David captureth the fortress of Zion, it is the city of David.

Therefore they say, "The blind and lame are never to come into the house." David occupied the fortress, naming it the City of David. He built up the surroundings from the terrace ramparts inward.

And the Philistines hear that they have anointed David for king over Israel, and all the Philistines come up to seek David, and David heareth, and goeth down unto the fortress,

Joab fought against Rabbah of the Ammonites and captured the royal fortress.

And he said, The LORD is my rock, and my fortress, and my deliverer;

God is my strong fortress, And he maketh my way perfectly smooth.

and David is then in a fortress, and the station of the Philistines is then in Beth-Lehem,

They went to the fortress of Tyre and all the cities of the Hivites and Canaanites. Afterward, they went to the Negev of Judah at Beer-sheba.