Martin Luther: “On Secular Authority: How Far Does the Obedience Owed to it Extend?”
January 1, 1523
So, if a prince or a secular lord commands you to adhere to the papacy, to believe this or that, or to surrender books, then your answer should be: it is not fitting for Lucifer to sit next to God. My good Lord, I owe you obedience with my life and goods. Command me what lie within the limits of your authority, and I will obey. But if you command me to believe, or to surrender my books, I will not obey. For then you [will have] become a tyrant and overreach[ed] yourself, commanding where you have neither right or power. If he then takes away your goods and punishes you for your disobedience, then blessed are you, and you should thank God for counting you worthy to suffer for the sake of his Word. […] But I say to you: if you do not resist him and let him take away your faith or your books, then you will truly have denied God.