Also See The Message of the Bible and The Warning of The Bible 
Forty independent writers were used in its compilation. They wrote over a 1,500 year time span. They lived in three different continents.. Asia, Africa and Europe. Moses wrote in the desert of Sinai, Paul wrote in a prison in Rome, Daniel from exile in Babylon, and Ezra in the ruined city of Jerusalem. They spoke and wrote in three different languages They had twenty different occupations, which included a couple of kings, a general, at least two fishermen, a musician, a priest, a tax collector, a physician etc. It has a cast of 2,930 characters in 1,551 places. It covers a huge number of different subjects. Isaiah wrote to warn Israel of God's coming judgment on their sin, Matthew wrote to prove to the Jews that Jesus is the Messiah, Zechariah wrote to encourage a disheartened Israel who had returned from Babylonian exile, and Paul wrote addressing problems in different Asian and European churches. it was written under many different circumstances. David wrote during a time of war, Jeremiah wrote at the sorrowful time of Israel's downfall, Peter wrote while Israel was under Roman domination, and Joshua wrote while invading the land of Canaan. Its message is expressed in all literary forms (poetry, prose, etc.). Yet Without possible concert or collusion, they produced a book which, in all its parts, is pervaded by one spirit, one doctrine, one design, and by an air of sublime authority which is its peculiar characteristic. It is amazing that with such diversity, there is such unity in the Bible. That unity is organized around one theme: God's redemption of man and all of creation. Hundreds of controversial subjects are addressed and yet the writers do not contradict each other.
Quite simply, this is a literary miracle - impossible to account on ordinary and natural principles. No other book in history can make the same claim!
Unconvinced? - Well let’s see if you (or anyone else) could do something similar
Could You Write The Bible?
Perhaps the best way to understand the Divine inspiration of the Scriptures would be to undertake to compile a book approximating the conditions under which the Bible was written.
Step One To begin with you would need 40 different writers from two or three countries... some highly educated, some not so much. The list would have to include farmers, a fisherman or two, at least one doctor, one musician and, if possible, someone brought up in the home of a ruling family in a foreign land. The authors would need to speak at least two different languages between them, and have no possible means of communication between themselves. No e-mail, phone, letters, or text messages. Only possibly word of mouth, passed down over the years (Didn't I mention that they need to live over a span of 1,500 years on three continents)
We have assembled our would be authors? Good! Step Two The next step is to ask them to write on all of the following topics ... God and His relationship with man, the creation of the universe and where they think it is going and where they think it will all end. Topics must include morality, ethics, a little science, poetry, and a light sprinkling of philosophy for good measure.
Step Three After 1500 years you would have to collect everything they have written and compile it into one book.
The Result Even a 60 years old biology textbook would contradict much of what is found in one today. And that is only 60 years. The only thing that one can guarantee with matte written over 1500 year by such a wide variety of authors on such a wide variety of subjects is that it will be one hodgepodge of world views and contradictions. A complete waste of time much less a 'lamp to our feet'.
The reason for the absolute unity of the Bible is because it had only one author, not forty. | 
