Job 41:27

25 When Leviathan rises up, the mighty are terrified; they withdraw before his thrashing.

26 The sword that reaches him has no effect, nor does the spear or dart or arrow.

He regards iron as straw and bronze as rotten wood.

28 No arrow can make him flee; slingstones become like chaff to him.

29 A club is regarded as straw, and he laughs at the sound of the lance.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
He regards iron as straw and bronze as rotten wood.
KJV
He esteemeth iron as straw, and brass as rotten wood.
WEB
He counts iron as straw, and bronze as rotten wood.
ASV
He counteth iron as straw, [And] brass as rotten wood.
DARBY
He esteemeth iron as straw, bronze as rotten wood.
BLB
He regards iron as straw, [and] bronze as rotten wood.
ÅB
Den akter jern som strå, kobber som ormstukket tre.
OTB
Han anser jern som strå,
Bronse som råtnet tre.
B1930
Den akter jern som strå, kobber som ormstukket tre.

Study notes (Tyndale)

Original text and word study