In this sermon God's One-Man Plan To Conquer Satan's Kingdom, Satan knows there is one God and he trembles. He knew taking out one man, ADAM, would affect the entire human race. It would make all of them slaves to the devil's kingdom of darkness. By the same token he knew the truth of Romans 5, and how ONE MAN COULD CONQUER HIM. Enslave the devil's entire kingdom by that single fell swoop. The devil knew after it was over the oneness of the Godhead like never before. He knows  there is one God and he trembles. He knows ONE GOD was manifest in Flesh as that ONE MAN, and defeated the devil. Satan trembles every time he's reminded to think of the cross that day. For little did he expect to happen what did happen.