Job 41:23

²¹ His breath sets coals ablaze, and flames pour from his mouth.

²² Strength resides in his neck, and dismay leaps before him.

The folds of his flesh are tightly joined; they are firm and immovable.

²⁴ His chest is as hard as a rock, as hard as a lower millstone!

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

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

Compare

BSB: The folds of his flesh are tightly joined; they are firm and immovable.
KJV: The flakes of his flesh are joined together: they are firm in themselves; they cannot be moved.
WEB: The flakes of his flesh are joined together. They are firm on him. They can’t be moved.
ASV: The flakes of his flesh are joined together: They are firm upon him; they cannot be moved.
DARBY: The flakes of his flesh are joined together: they are fused upon him, they cannot be moved.
BLB: The folds of his flesh are joined together, c on him, [and] it annot be shaken.

ÅB: Dens doglapper sitter fast; de er som støpt på den og rører seg ikke.
OTB: Foldene av hans kjøtt er tett sammenføyd,
Faste og ubevegelige på ham.
B1930: Dens doglapper sitter fast; de er som støpt på den og rører sig ikke.