This is what I believe God has shown me about Job.
God is telling Satan and us that Job is born again of the Spirit from above. He is saved by Grace, by the blood of the Lamb, the only reason that any man is justified before God.
However, our brother had lost sight of the Gift of God and by what manner he was saved. He had taken it upon himself to be mediator between his children and God. This can only be fulfilled by one Man, Jesus, the Christ of God.
He was trying to be their saviour, not trusting them to God.
Job had been deceived into dead works by Satan and was putting himself under the letter of the law again.
Love, Dave