'Wall' in the Bible

Against every high tower,Against every fortified wall,

“So now let me tell you what I am going to do to My vineyard:I will take away its thorn-hedge, and it will be burned up;I will break down its stone wall and it will be trampled down [by enemies].

My mind reels, horror overwhelms me;The twilight I longed for has been turned into fear and trembling for me.

Then you counted the houses of JerusalemAnd you tore down the houses [to get materials] to fortify the city wall [by extending it].

For You have been a stronghold for the helpless,A stronghold for the poor in his distress,A shelter from the storm, a shade from the heat;For the breath of tyrantsIs like a rainstorm against a wall.

Therefore this wickedness [this sin, this injustice, this wrongdoing] will be to youLike a crack [in a wall] about to fall,A bulge in a high wall,Whose collapse comes suddenly in an instant,

Then Eliakim and Shebna and Joah said to the Rabshakeh, “Please, speak to your servants in Aramaic, because we understand it; and do not speak to us in Judean (Hebrew) in the hearing of the people who are [stationed] on the wall.”

But the Rabshakeh said, “Has my master sent me to speak these words only to your master and to you, and not to the men sitting on the wall, doomed to eat their own dung and drink their own urine with you?”

Then Hezekiah turned his face to the wall and prayed to the Lord,

We grope for a wall like the blind,We grope like those who have no eyes.We stumble at midday as in the twilight;Among those who are healthy we are like dead men.