Romans 1:17 For in it the righteousness of God is revealed from faith for faith, as it is written, "The righteous shall live by faith."
On October 31, 1517, Dr. Martin Luther nailed his 95 Theses on the door of Castle Church in Wittenburg, Germany. This was the spark that ignited the The Reformation which had historical impacts on music, arts, politics but most importantly, religion and faith. The sum of Luther's protest was in regards to indulgences, which was a practice instituted by the Roman Catholic Church.
In rememberance of this heroic and historical act, Reformation Day is celebrated on October 31 or the last weekend in October by many Christians around the world...a day in which we remember that it is by God's grace through faith in Jesus Christ that we are saved.
For more information on Reformation Day visit http://www.monergism.com/.
And finally, here is a great hymn that captures the theme of The Reformation:
"By grace God's Son, our only Savior,
Came down to earth to bear our sin.
Was it because of your own merit
That Jesus died your soul to win?
No, it was grace, and grace alone,
That brought Him from His heav'nly throne."