Job 40:17

¹⁵ Look at Behemoth, which I made along with you. He feeds on grass like an ox.

¹⁶ See the strength of his loins and the power in the muscles of his belly.

His tail sways like a cedar; the sinews of his thighs are tightly knit.

¹⁸ His bones are tubes of bronze; his limbs are rods of iron.

¹⁹ He is the foremost of God’s works; only his Maker can draw the sword against him.

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

Compare

BSB: His tail sways like a cedar; the sinews of his thighs are tightly knit.
KJV: He moveth his tail like a cedar: the sinews of his stones are wrapped together.
WEB: He moves his tail like a cedar. The sinews of his thighs are knit together.
ASV: He moveth his tail like a cedar: The sinews of his thighs are knit together.
DARBY: He bendeth his tail like a cedar; the sinews of his thighs are woven together.
BLB: He bends his tail like a cedar; the sinews of his thighs are tightly knit.

ÅB: Den strekker sin hale som en seder; senene i dens lår er sammenslynget.
OTB: Dens hale svinger som en seder;
senene på dens lår er tett bundet.
B1930: Den strekker sin hale som en seder; senene i dens lår er sammenslynget.

Job 41:23
The folds of his flesh are tightly joined; they are firm and immovable.
Read in context