NET
12 The fortified city (along with the very tops of your walls) he will knock down, he will bring it down, he will throw it down to the dusty ground.
Darby
12 And the fortress of the high defences of thy walls will he bring down, lay low, bring to the ground, into the dust.
KJV
12 And the fortress of the high fort of thy walls shall he bring down, lay low, [and] bring to the ground, [even] to the dust.