The Luther Bible is a German translation of the Bible by the theologian Martin Luther, completed in 1534. It was significant for making the scriptures accessible to ordinary German speakers, promoting literacy and religious reform. Luther's translation emphasized the importance of faith and scripture in Christianity. This Bible played a crucial role in the Protestant Reformation, influencing the development of the German language and culture. It helped establish the principle of sola scriptura, which asserts that the Bible alone is the ultimate authority in matters of faith and practice.