Charles Ellicott Commentary Job 6:8

"Oh that I might have my request; And that God would grant [me] the thing that I long for!" — Job 6:8 (ASV)

Oh that I might have my request.—Baffled by his fellow human beings, he turns, like many others, to God as his only hope, although it is rather from God than in God that his hope lies. However exceptional Job’s trials, yet his language is the common language of all sufferers who think that relief, if it comes, must come through a change of circumstances rather than through a change within themselves in relation to those circumstances.

Thus Job looks forward to death as his only hope; whereas with God and in God, many years of life and prosperity were in store for him. So strong is this feeling in him, that he calls death the thing that he longs for, his hope or expectation. (Compare to Job 17:0, where even the hope he had in death seems to have passed away and resulted in blank hopelessness.)