Job 15:22

He believeth not that he shall return out of darkness
When he lies down at night he despairs of ever seeing the light of the morning, through fear of an enemy, a robber, a murderer, or of one disaster or another, ( Deuteronomy 28:66 Deuteronomy 28:67 ) ; or when he is in any affliction and calamity, which is often signified by darkness, he cannot persuade himself that he shall ever be delivered out of it, and restored to his former condition again: and here Eliphaz seems to glance at Job, who had no hope of his being brought into such a state of prosperity he had been in; whereas good men, when in darkness, believe they shall be brought again to the light, as the church in ( Micah 7:8 Micah 7:9 ) ; or the infidel, who knows he must be laid in the dark and silent grave; the Heathen man, such as were many of the neighbours of Eliphaz, the Idumeans, among whom he dwelt, who were without the hope of a glorious resurrection; and which is an article of pure revelation, and which the idolatrous Heathen were strangers to, and so believed it not, or any deliverance from the grave; or this may respect the blackness of darkness, the outer darkness, the darkness of hell, which when once a wicked man is cast into, and enveloped with, he despairs, as he well may, of ever being delivered out of it:

and he is waited for of the sword;
or by them that kill with the sword, as the Targum, who lie in wait for him, to rob him, and kill him; or in his own apprehension he seems to have nothing but drawn swords about him, or a sword hanging over his head, or the judgments of God ready to fall upon him for his sins; for he, having killed others with the sword, must expect to be killed with it himself.