The Lutheranism Church is the oldest of existing Protestant churches. It can be traced to the eve of All Saints Day, October 31, 1517. All Saints' Day, also known as All Hallows' Day, Hallowmas the Feast of All Saints, or Solemnity of All Saints,is a Christian festival celebrated in honour of all the saints, known and unknown. In Western Christianity, it is celebrated on November 1 by the Roman Catholic Church, the Anglican Communion, the Methodist Church, the Philippine Independent Church or the Iglesia Filipina Independiente, the Church of the Nazarene, the Lutheran Church, the Reformed Church, and other Protestant churches. November 1 is also the day before All Souls' Day.
On October 31, 1517, Martin Luther (a Roman Catholic priest of the Sulpician order) nailed his 95 theses to the door of the Church at Wittenburg, Germany. He was principally opposing the sale of Indulgences as preached by Tetzel throughout Germany. Luther's intention was to reform the Roman Church, not to start a new one. However, his actions started a great movement known as the Protestant Reformation.
Again note: Luther sought to REFORM or CHANGE the Roman Church not start another church. He certainly would not approve of a Lutheran church today. He also did not seek to RESTORE the Roman Church to be like the (One) church establish by Christ in the scriptures.
Luther at the age of 20 obtained a complete copy of the Bible in a university library. He soon developed a great love and respect for it. He later in entered a monastery, but when he saw the many evils in it, he quit and left it.
various trials were held, and after Luther was given a chance to renounce his views but refused to do so, he was banned in 1521 from the Roman Church. He then started meeting on his own and soon had a sizeable following. The worship was similar to that of the Catholics. (Scaff-Herzog, Vol. 2,p. 1363-72)