Bible - how they decide?

While reading about the Bible this morning, I was just thinking more about how the early Christians thinking about. So, I started googling all about the canon of the Bible.

http://freethought.mbdojo.com/canon.html

The ending give an interesting comment about how Martin Luther, the greatest reformer:

Martin Luther

The greatest name in the records of the Protestant church is Martin Luther. He is generally recognized as its founder; he is considered one of the highest authorities on the Bible; he devoted a large portion of his life to its study; he made a translation of it for his people, a work which is accepted as one of the classics of German literature. With Luther the Bible superseded the church as a divine authority. And yet this greatest of Protestants rejected no less than six of the sixty-six books composing the Protestant Bible.

Luther rejected the book of Esther. He says: "I am such an enemy to the book of Esther that I wish it did not exist." In his "Bondage of the Will," he severely criticises the book.

He rejected the book of Jonah. He says: "The history of Jonah is so monstrous as to be absolutely incredible." (Colloquia, Chap. LX., Sec. 10).

He rejected Hebrews: "The Epistle to the Hebrews is not by St. Paul; nor, indeed, by any apostle." (Standing Preface to Luther’s New Testament).

He rejected the Epistle of James: "St. James' Epistle is truly an epistle of straw." (Preface to Edition of 1524).

He rejected Jude. “The Epistle of Jude,” he says, “allegeth stories and sayings which have no place in Scripture." (Standing Preface).

He rejected Revelation. He says: "I can discover no trace that it is established by the Holy Spirit." (Preface to Edition of 1622).


Now, how should we, Christian responds to all these?