October 31 Words and Music by Martin Luther, 1483–1546 English Translation by Frederick H. Hedge, 1805–1890 God is our refuge and strength, an ever present help in trouble. Therefore we will not fear, though the earth give way and the mountains fall into the heart of the sea. (Psalm 46:1, 2) October 31, 1517, is perhaps the most important day in Protestant history. This was the day when Martin Luther, an Augustinian monk and a professor of theology, posted on the doors of the Cathedral