'Strong City' in the Bible

Who will bring me into the besieged city [of Petra]?Who will lead me to Edom?

The rich man’s wealth is his fortress;The ruin of the poor is their poverty.

The rich man’s wealth is his strong city,And like a high wall [of protection] in his own imagination and conceit.

A brother offended is harder to win over than a fortified city,And contentions [separating families] are like the bars of a castle.

In that day this song will be sung in the land of Judah:“We have a strong city;He sets up salvation as walls and ramparts.