Part I of Job

The story of Job has a connection to almost everything we already talked about in the Old Testement. In almost every story I noticed that it all goes back to one thing and that's God's characterization and who God really is and what he does to people. In the story of Job God is testing Job and his loyalty like other stories we have read. The same question came into my head from the past stories we read before. So what does this say about God? Why would he need to test people if he's known for knowing everything. For example in the story Adm and Eve he put a tree in the middle and just told them not to touch it but why though, what was the point of that tree. And if God really knows everything he would've known they would touch the tree so why did he want to set innocent people up for failure. Another story that relates to this is the story of Abraham. If God happens to know everything why did he need to make Abraham go through what he went through just to see what he already knew was true. Another similarity I noticed throughout all the stories is that God is demanding. I noticed he doesn't ask anything he just does it. If he needs something done he gets it done and always finds someone to do it. At the end of the day God is one bipolar man. He either treats you well and gives you what you deserve or becomes completely unpredictable and tries to make your life a lot harder.