Q. How is it fair to a person born to be put through hell in life because he is used by the devil and God. Is this like the story of Job? How could God use a man and not save him?
I’m not entirely sure what you’re asking about here, but let me reassert, as I’ve said often on this blog, that I believe God gives everyone the opportunity to trust in Him and be saved, and in fact God makes every effort to bring each person to salvation. As the Bible says, God “doesn’t want anyone to be destroyed. Instead, he wants all people to turn away from their sins.” So I don’t believe that God would “use” somebody for His purposes and then just discard that person afterwards. Any purposes God pursues through our lives are subservient to the purpose God pursues for our lives, which is to bring us to know and trust Him and enjoy His presence forever.
In terms of the story of Job specifically, in my study guide to that book I note, “The book of Job has much to say about the ‘problem of evil,’ that is, why there is so much suffering in the world if it’s governed by a good God. But [in the opening story] the Adversary [the name for Satan in the book] begins by raising a different problem, the ‘problem of good.’ If apparent goodness is always rewarded and bad conduct is always punished, how can we ever really be sure that a person is genuinely good, and not just trying to win rewards and avoid punishment? It turns out that the only kind of universe in which genuine good can be known to exist is one in which good people sometimes suffer undeservedly, but still demonstrate continuing loyalty to God.”
This is what God “uses” Job to demonstrate over the course of the book (if we may use that term). And there’s no question that at the end he’s “saved,” that is, fully returned to God’s tangible favor and blessing.
I hope this helps address your concerns.