if God knows everything, why did he allow satan

You have asked a question which many people ask, and it deserves to be answered. This is a poor illustration, but one that most mothers would readily understand. I have five wonderful sons. They were obedient and that pleased me, but can you imagine the much, much greater pleasure it gave me when one would come up to me, and say "Mum, I can see you're busy. Would you like me to cook dinner tonight?" Can you see the difference - from a mother's point of view - between a child who obeys because he has to, and one who voluntarily offers to do something? As I said, it is a poor illustration, but it gives an idea of the answer to your question. God created the world for one reason: as a playground for the people He made in His own image. And He made those people for one reason: to have fellowship with Him. We see that He did this with Adam & Eve, walking with them in the garden in the cool of the evening. Now, put yourself in the place of God for a moment. Would you want a mob of robots to do whatever you said? I guess we'd all like that - but all the time? and no one else? It would be great to have SOME robots in our lives, but wouldn't you miss out on the greatest pleasures if you received no response, other than what they were programmed to do? Wouldn't you cry out for a NATURAL response? Wouldn't you want people to love you from their own desires? Of course you would! And so did God. Yes, He knew that satan would rebel. He knew that Adam & Eve would sin, and that sin would be passed to every person born. He also knew that He had a plan to REDEEM a people to Himself: people who would want to know, love and serve Him. I am one of these redeemed people. I know, love and serve my loving heavenly Father because of what the Lord Jesus Christ has done for me - because I WANT to.

actually a person asked GOD - for all things you said just experience it then for what purpose you are here. Then god says that experience is mine. so feel the god is in you and evil things are not created by god its created by us and its going to destroyed by us.