Jamieson, Fausset and Brown on Job 7:2

2. earnestly desireth--Hebrew, "pants for the [evening] shadow." Easterners measure time by the length of their shadow. If the servant longs for the evening when his wages are paid, why may not Job long for the close of his hard service, when he shall enter on his "reward?" This proves that Job did not, as many maintain, regard the grave as a mere sleep.

3.--Months of comfortless misfortune.

I am made to possess--literally, "to be heir to." Irony. "To be heir to," is usually a matter of joy; but here it is the entail of an involuntary and dismal inheritance.

Months--for days, to express its long duration.

Appointed--literally, "they have numbered to me"; marking well the unavoidable doom assigned to him.