"There is no need to criticize the authenticity of the Scriptures when we can know that God was behind the scenes directing and guiding men in what to record."
and how come god isn't "behind the scenes" directing the research into the origins of scripture?
Isaiah [46vs9,10] apparently concluded about God, as the Author or Originator of the Scriptures, is the One telling from the beginning the finale, and from long ago the things that have not been done; the One saying, 'My own counsel will stand, and everything that is my delight I shall do'.....
Not just that God is the Author [Originator] of Scripture [2nd Tim 3vs16,17],
but despite having many enemies the Bible, although written on fragile paper still survives, even though many ancient writings have been lost through time or just plain forgotten about. With God as Author the origins is that the Bible writers wrote under God's inspiration. [Isaiah 40v8; 1Peter1v25]
Also, no one can get rid of the Bible nor stop the spreading of the good news of God's kingdom on an international scale.-Matthew 24v14.