Because he covereth his face with his fatness
He has no fear of God, nor shame for his sin; he blushes not to rise up against God in the manner he does, because his eyes stand out with fatness; or rather his face is covered with it, that is, he abounds in riches, he enjoys great prosperity, a large affluence of all good things; and this makes him haughty and imperious, neither to fear God, nor regard man like Jeshurun, who, when he "waxed fat, [was] grown thick, and covered with fatness, kicked" against God, and his providences, sinned and rebelled against him; "forsook God which made him, and lightly esteemed the Rock of his salvation", ( Deuteronomy 32:15 ) ; and to the same purpose is the following clause:
and maketh collops of fat in [his] flanks;
a description of a very fat man, and one that pampers the flesh, and indulges himself in eating and drinking; and, figuratively, of one that abounds in the good things of this world, and which make him vain and proud, and lead him on to commit sin in a bold and daring way, promising himself impunity in it, but without any just ground for it, as the following verses show; perhaps some respect may be had to Job's children feasting with one another in their prosperity, which led on to sin, and issued in their ruin, as Eliphaz would suggest.