Martin Luther was not only a reformer of the Catholic Church, but also the founder of the Lutheran Church. Besides confronting the sale of indulgences, the Reformation also created opportunities for church congregations to sing hymns in people's native language. In Germany, the faith of the people was strengthened through singing hymns in the German language. Luther put his effort on translating the Latin Bible into German and transforming God's words into music so that it could be sung and heard. After five hundred years, these hymns are still treasures of the church. This thesis attempts to explore how Luther's hymn "Ein feste Burg ist unser Gott" withstood the test of time, especially from 1521 to 1529, when there was much upheaval in politics, society, religion, and Luther's own life.