God has plans for Satan. It is the LORD who will dispense justice for both them. As long as the evil Tiller lives he can exchange his unfathomably excruciating, eternal punishment for righteousness, providing he excepts the punishment that Christ took for him when He bled and died on the cross in his stead. Tiller, repenting from his unspeakably wicked past can by the measureless grace of God through the death of His Only Begotten Son still be saved. It is a truly amazing fact that God saves even the worst of us and that by His glorious and perfect standard we have all been exceedingly wicked.
LLS