Was not the Bible unknown to the people before the Reformation?

The Catholic Answers

No. Beautifully illuminated copies of the Scriptures, wrought by the Monks, were in the charge of the Clergy and the Churches, and from these the Word of God was carefully preached to the people. Before the invention of the printing press, a wider diffusion was impossible.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty