Those are Luther beliefs - Sola Scripture. Since he considered the Church too corrupt he trusted only the Church Holy Scripture (after some editing of course like throwing out the deuterocanonical books).
He refused to recognise that the books of the Bible was compiled, selected and validated by the Church. Jesus Christ did not found the Bible - he founded the Church made from his disciples who later wrote books of New Testament. Same way was with the Church of Old Testament first were the people - Jews and onlt after were the books.
Also Luther was a run-away monk who married a nun - this could explain why his followers inherited the tendency to disparage the virginity.
Saying that the early Church chose the books that constituted the Bible is like telling the Native Americans that Columbus discovered America. God set the canon, the Church received them.
Luther was in agreement with many of the early Church fathers, including Jerome, who compiled what was to become the official Bible for almost 1,000 years.
Jerome included the "deuterocanonical" books in a separate section of the Latin Vulgate because he and the other best minds of the day considered them worthy of study, but not to be considered Scripture because of the significant errors in them of time, geography, and theology. In fact, the "deuterocanonical" books were not officially designated canon until Trent -- mostly in response to Luther's rejection of them.
One might properly say that Luther didn't take away the "deuterocanonical" books from the Protestants, but rather gave them to the Catholics!
Would YOU be willing to discuss this subject with the threat of death from the Church in Rome hanging over you?