If only there were a mediator between us, someone who could bring us together.
Of course what immediately comes to mind when reading that is that thankfully we have Jesus.
I am not sure however, that mediator is the best translation of the word used here which is closer to the idea of an arbiter, an umpire, or a judge. One who can restrain both parties and judge between them. I think from the context of this verse that Job is making the point that we mortals have no standing before Almighty God. He is God and we are not. We are not even close to being on the same playing field. We cannot go to an umpire or a judge because none would be qualified to make a judgement against God. Who can hold God back from what He decides to do? The answer is no one.
that we should come to trial together.
There is no arbiter between us,
who might lay his hand on us both.
Let him take his rod away from me,
and let not dread of him terrify me.
Then I would speak without fear of him,
for I am not so in myself. (Job 9:32-35, ESV)