Proverbs 25:28
He that hath no rule over his own spirit is like a city that is broken down, and without walls.
Ezekiel 38:11
And thou shalt say, I will go up to the land of unwalled villages; I will go to them that are at rest, that dwell safely, all of them dwelling without walls, and having neither bars nor gates,
Zech. 2:4
And said unto him, Run, speak to this young man, saying, Jerusalem shall be inhabited as towns without walls for the multitude of men and cattle therein: