"He said that Satan could harm him in any way.."
Sure looks like He gave His permission to me ... Billy, you can do anything to your sister excpt hit her with the baseball bat...
Hitler didn't kill anyone either
( well, maybe in WW I, think he was a sargent )
He was a corporal.
God did not create Satan. He created Lucifer as an angel. Lucifer exercised his free will and became Satan (The Adversary).
Very perceptive. Yes, He did give Satan permission to harm Job, but NOT TO KILL HIM. Satan could do anything he wanted to, short of taking Job's life. God loved Job and protected his life. After it was all over, God gave him back everything he had before, plus some.