His strength is depleted, and calamity is ready at his side.
Bildad here describes the destruction itself which wicked people are reserved for in the other world, and which, in some degree, often seizes them in this world. Come, and see what a miserable condition the sinner is in when his day comes to fall. I.
Commenting on Job 18:11-21
It shall devour the strength of his skin,.... Or "the bars of his skin" (x), the strength and support of his body, for which his skin may be put, as the bones; or "the branches of his skin" (y), the veins, which like so many branches run under, and may be seen through the skin: now these, it, famine, or want of food, devours, and...
The Hebrew is brief and bold, "his strength is hungry." destruction--that is, a great calamity (Pro 1:27). ready at his side--close at hand to destroy him (Pro 19:29).