Job 20:22 - Matthew Poole's English Annotations on the Holy Bible

In the fulness of his sufficiency he shall be in straits; i.e. the height of prosperity and abundance he shall be distressed and tormented, either by the horrors of an unquiet mind and guilty conscience, which makes him every moment expect Divine vengeance to fall upon his head; or rather, because of the sudden and unexpected assault of other men combining against him, and spoiling all his goods, as it follows. Every hand of the wicked, who lives by injury and the spoiling of others, and by God's providence are directed to fall upon him. Or, of the labourer, whose wages possibly he hath detained; or, of such as are in trouble or misery, as this word signifies, Job 3:20, who may jointly invade him, either because their necessity tempts and drives them to spoil others; or rather, because they were such as had been brought into their calamity by his oppressions, and therefore now take reparations from him.