“The Diatribe contends -- that it is declared by this passage, that what is commanded is not only placed in us, but is down-hill work, that is, easy to be done, or at least, not difficult.' - I thank the Diatribe for such wonderful erudition! For if Moses so plainly declare, that there is in us, not only an ability, but also a power to keep all the commandments with ease, why have I been toiling all this time! Why did I not at once produce this passage and assert "Free-will" before the whole world! What need now of Christ! What need of the Spirit! We have now found a passage which stops the mouths of all, and, which not only plainly asserts the liberty of the will, but teaches that the observance of all the commandments is easy! -- What need was there for Christ to purchase for us, even with His own blood, the Spirit, as though necessary, in order that He might make the keeping of the commandments easy unto us, when we were already thus qualified by nature! Nay, here, the Diatribe itself recants its own assertions, where it affirmed, that "Freewill" cannot will any thing good without grace,' and now affirms, that "Free-will" is of such power, that it can, not only will good, but keep the greatest, nay, all the commandments, with ease. Only”
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.