Perspective is awfully important in life, isn't it? In the case of Job, God decided to give him a new perspective. Instead of being consumed with the issues he was facing and the trials that were plaguing him, God gave job a different perspective. Where was Job when God created the earth? Did Job ever command the sun to rise and set? Did he put the heavenly bodies in the sky? Of course not! God wanted Job to look at the world differently.
I've often heard it said, "the more I know, the more I know I don't know." I'm guessing that was true for Job when God finally spoke to him. So often, it's from our lack of knowledge that we make assumptions and draw conclusions about the world around us. But God wanted something different for Job – He wanted to Job to see the world through His lens. All of the sudden, the problems he was facing weren't quite as monumental as they felt. The same is true for me when I put my problems in perspective with eternity. I'm not saying they aren't important (or that God even views them as unimportant), but in the light of eternity they sure look different.