when it comes to religion, the bible provides the 'evident demonstration' thru its record of historical events linked with Gods people. These are too numerous to mention individually but they include things like prophecies and the arrival of the Messiah. The people who wrote these historical facts were eyewitnesses to them and this is why christians today can put faith in their words.
The belief that these are facts and actual historical occurences is where blind faith comes in. For historical figures such as Jefferson and Shakespeare we have accounts from disinterested sources, and even the enemies of these figures. Not so with Jesus. The only accounts we have were written by followers several decades after the fact. Not only that, but these accounts contradict each other in ways that can not be ignored. You would think that dead people walking the streets after Jesus' resurrection would have made the local papers, or something. Jesus is also said to have appeared to hundreds, if not thousands, of people before the ascension. Not one of those supposed disinterested witnesses reported anything.
Do you believe that a man named Shakespear wrote Romeo and Juliet? If you do, how do you know that he did write it?
Actually, it is very possible that Shakespeare stole some of his material from other playwrights (e.g. Christopher Marlowe). I have no dogmatic belief that Shakespeare did write Romeo and Juliet, although that is the best possibility as of right now.
Do you believe that the USA's 'Declaration of Independence' was actually written by Thomas Jefferson?
Absolutely not. He had a lot of help writing it. Also, the complaints listed in the DoI can be verified from several disinterested sources.