Because he has stretched out his hand against God and defies the Almighty,
Eliphaz, having reproved Job for his answers, here comes to maintain his own thesis, upon which he built his censure of Job. His opinion is that those who are wicked are certainly miserable, whence he would infer that those who are miserable are certainly wicked, and that therefore Job was so. Observe, I.
Commenting on Job 15:17-35
He runneth upon him, even on his neck,.... As a fierce and furious enemy runs upon another with great wrath and fury; as the he goat in Daniel's vision ran upon the ram, in the fury of his power, that is, Alexander upon Darius; which instance Bar Tzemach refers to; and as an adversary, who throws down his weapons, and goes in to closer quarters...
stretcheth . . . hand--wielding the spear, as a bold rebel against God (Job 9:4; Isa 27:4).