Job 8: 3-4  Does God pervert justice? Does the Almighty pervert what is right? When your children sinned against him, he gave them over to the penalty of their sin.

Remember, Job sacrificed burnt offerings for his children, just in case they had sinned.  

 Whether Bildad knows it or not, his words in Job 8:6-7 are very prophetic. God does restore Job, more prosperous than before. Take a peek at the end of Job and see.

Job 8:6-7
if you are pure and upright, even now he will rouse himself on your behalf and restore you to your rightful place. Your beginnings will seem humble, so prosperous will your future be.

Later on in Chapter 8, Bildad mentions forgetting God is like relying on a spider's web, when the web is leaned on it gives way.  It's like trusting in earthly things.  They are like spider's webs and give way when we lean on them.  Only God can sustain! 

Isn’t it fascinating that Job knew about the constellations??? Even the Southern Cross constellation in the Southern Hemisphere.
Job 9:9
He is the Maker of the Bear and Orion, the Pleiades and the constellations of the south.

Some of the questions Job had in chapter 7, he answers for himself in chapter 9. Even at our very best we still sin and must plead for mercy.

Isa 64:6
All of us have become like one who is unclean, and all our righteous acts are like filthy rags; we all shrivel up like a leaf, and like the wind our sins sweep us away.

There is an incredible verse (among many, many others) hidden away in Job.
Job 9:32-34
"He is not a man like me that I might answer him, that we might confront each other in court. If only there were someone to arbitrate between us, to lay his hand upon us both, someone to remove God's rod from me, so that his terror would frighten me no more.

Praise God, there is someone to arbitrate between us!
It’s Jesus!