Daniel 7:7

7:7 “After these things, as I was watching in the night visions a fourth beast appeared – one dreadful, terrible, and very strong. It had two large rows of iron teeth. It devoured and crushed, and anything that was left it trampled with its feet. It was different from all the beasts that came before it, and it had ten horns.

Jeremiah 15:12

15:12 Can you people who are like iron and bronze

break that iron fist from the north?

Amos 1:3

1:3 This is what the Lord says:

“Because Damascus has committed three crimes –

make that four! – I will not revoke my

decree of judgment.

They ripped through Gilead like threshing sledges with iron teeth.