2nd Peter 5:8
Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:
Think about this why does he have to seek whom he may devour? I believe the answer is simple. He has to seek because he can't destroy everyone! He can only devour those who allow him. Don't allow satan any victory in your life remember "greater is he that is in me than he that is in the world."