Martin Luther (b. November 10, 1483, in Eisleben, Germany, d. February 18, 1546 in Eisleben) is known as the Father of Protestantism. He had studied to become a lawyer before becoming an Augustinian monk in 1505, and was ordained a priest in 1507. While continuing his studies in pursuit of a Doctor of Theology degree, he discovered significant differences between what he read in the Bible and the theology and practices of the church. On October 31, 1517, he posted a challenge on the church door at Wittenberg University to debate 95 theological issues. Luther's hope was that the church would reform its practice and preaching to be more consistent with the Word of God as contained in the Bible.
What started as an academic debate escalated to a religious war, fueled by fiery temperaments and violent language on both sides. As a result, there was not a reformation of the church but a separation. "Lutheran" was a name applied to Luther and his followers as an insult but adopted as a badge of honor by them instead.
Lutherans still celebrate the Reformation on October 31 and still hold to the basic principles of theology and practice espoused by Luther, such as Sola Gratia, Sola Fide, Sola Scriptura.
Another of Luther's principles was that Scriptures and worship need to be in the language of the people.
Many Lutherans still consider themselves as a reforming movement within the Church catholic, rather than a separatist movement, and Lutherans have engaged in ecumenical dialogue with other church bodies including the Catholic Church for decades. In fact, the Evangelical Lutheran Church in America has entered into cooperative "full communion" agreements with several other Protestant denominations .
Luther's Small Catechism, which contains teachings on the Ten Commandments, the Apostles' Creed, the Lord's Prayer, Holy Baptism, Confession and Absolution, Holy Communion and Morning and Evening Prayers, is still used to introduce people to the Lutheran faith, as is the Augsburg Confession.
-- courtesy of ELCA.org
Do Lutherans believe theirs is the only true religion?" This question was once put to the late Dr. Elson Ruff, editor of The Lutheran. His answer was, "Yes, but Lutherans don't believe they are the only ones who have it. There are true Christian believers in a vast majority of the churches, perhaps in all." The ELCA Confession of Faith says "This church confesses Jesus Christ as Lord and Savior and the Gospel as the power of God for the salvation of all who believe .. --courtesy of ELCA.org