Nehemiah 4:3

4:3 Then Tobiah the Ammonite, who was close by, said, “If even a fox were to climb up on what they are building, it would break down their wall of stones!”

Psalms 62:3

62:3 How long will you threaten a man?

All of you are murderers,

as dangerous as a leaning wall or an unstable fence.

Isaiah 30:13

30:13 So this sin will become your downfall.

You will be like a high wall

that bulges and cracks and is ready to collapse;

it crumbles suddenly, in a flash.