“Because I see that the mobs are always growing, the number of errors are always increasing and Satan's rage and ruin have no end, I wish to confess with this work my faith before God and the whole world, point by point. I am doing this, lest certain people cite me or my writings, while I am alive or after I am dead, to support their errors, as those fanatics, the Sacramentarians and the Anabaptists, have begun to do. I will remain in this confession until my death (God help me!), will depart from this world in it, and appear before the Judgment Seat of our Lord Jesus Christ. So that no one will say after my death, ``If Luther was alive, he would teach and believe this article differently, because he did not think it through sufficiently,'' I state the following, once and for all: I, by God's grace, I have diligently examined these articles in the light of passages throughout the Scriptures. I have worked on them repeatedly and you can be sure that I want to defend them, in the same way that I have just defended the Sacrament of the Altar. No, I'm not drunk or impulsive. I know what I am saying and understand fully what this will mean for me as I stand before the Lord Jesus Christ on the Last Day. No one should think that I am joking or rambling. I'm serious! By God's grace, I know Satan very well. If Satan can turn God's Word upside down and pervert the Scriptures, what will he do with my words -- or the words of others?" - Martin Luther”
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.