http://www.biblegateway.com/passage/?search=Job+13&version=NIV
20 “Only grant me these two things, God,
and then I will not hide from you:
21 Withdraw your hand far from me,
and stop frightening me with your terrors.
22 Then summon me and I will answer,
or let me speak, and you reply to me.
23 How many wrongs and sins have I committed?
Show me my offense and my sin.
Job is still trying to have a reasoned man’s discussion with God – he is negotiating with God here.