“If anyone attempted to rule the world by the gospel and to abolish all temporal law and sword on the plea that all are baptized and Christian, and that, according to the gospel, there shall be among them no law or sword - or need for either - pray tell me, friend, what would he be doing? He would be loosing the ropes and chains of the savage wild beasts and letting them bite and mangle everyone, meanwhile insisting that they were harmless, tame, and gentle creatures; but I would have the proof in my wounds. Just so would the wicked under the name of Christian abuse evangelical freedom, carry on their rascality, and insist that they were Christians subject neither to law nor sword, as some are already raving and ranting. To such a one we must say: Certainly it is true that Christians, so far as they themselves are concerned, are subject neither to law nor sword, and have need of neither. But take heed and first fill the world with real Christians before you attempt to rule it in a Christian and evangelical manner. This you will never accomplish; for the world and the masses are and always will be unchristian, even if they are all baptized and Christian in name. Christians are few and far between (as the saying is). Therefore, it is out of the question that there should be a common Christian government over the whole world, or indeed over a single country or any considerable body of people, for the wicked always outnumber the good. Hence, a man who would venture to govern an entire country or the world with the gospel would be like a shepherd who should put together in one fold wolves, lions, eagles, and sheep, and let them mingle freely with one another, saying, “Help yourselves, and be good and peaceful toward one another. The fold is open, there is plenty of food. You need have no fear of dogs and clubs.” The sheep would doubtless keep the peace and allow themselves to be fed and governed peacefully, but they would not live long, nor would one beast survive another. For this reason one must carefully distinguish between these two governments. Both must be permitted to remain; the one to produce righteousness, the other to bring about external peace and prevent evil deeds. Neither one is sufficient in the world without the other. No one can become righteous in the sight of God by means of the temporal government, without Christ's spiritual government. Christ's government does not extend over all men; rather, Christians are always a minority in the midst of non-Christians. Now where temporal government or law alone prevails, there sheer hypocrisy is inevitable, even though the commandments be God's very own. For without the Holy Spirit in the heart no one becomes truly righteous, no matter how fine the works he does. On the other hand, where the spiritual government alone prevails over land and people, there wickedness is given free rein and the door is open for all manner of rascality, for the world as a whole cannot receive or comprehend it. ”
Martin Luther changed the course of Western civilization by initiating the Protestant Reformation. As a priest and theology professor, he confronted indulgence salesmen with his 95 Theses in 1517. Luther strongly disputed their claim that freedom from God's punishment of sin could be purchased with money. His refusal to retract all of his writings at the demand of Pope Leo X in 1520 and the Holy Roman Emperor Charles V at the Diet of Worms meeting in 1521 resulted in his excommunication by the pope and condemnation as an outlaw by the emperor.
Luther taught that salvation is a free gift of God and received only by grace through faith in Jesus as redeemer from sin, not from good works. His theology challenged the authority of the pope of the Roman Catholic Church by teaching that the Bible is the only source of divinely revealed knowledge and opposed sacerdotalism by considering all baptized Christians to be a holy priesthood.
His translation of the Bible into the language of the people (instead of Latin) made it more accessible, causing a tremendous impact on the church and on German culture. It fostered the development of a standard version of the German language, added several principles to the art of translation, and influenced the translation into English of the King James Bible. His hymns inspired the development of singing in churches. His marriage to Katharina von Bora set a model for the practice of clerical marriage, allowing Protestant priests to marry.