However, according to Bright, there are some very important parts within the Old Testament that serve a greater purpose than other do. From there, he also attempts to establish everything in the Old Testament and New Testament is equally binding. Furthermore, he believed any attempt to level out these differences are authoritative for Christian thought (Bright and Kelsey 1967). Along with that, it is clear that he believed that the differences are very difficult to figure out, which may explain why his thesis was unclear.

We shall never hear the Old Testament's word rightly unless we are willing to hear it all. That is to say, we must hear it in its full humanity. There is a drive toward incarnation in the biblical revelation... It pleased God to reveal himself not through timeless teachings, or some heavenly gnosis, but through the events of a particular history, and to and through men who were caught up in history, and who were in every case men of like passions with ourselves and subject to all the limitations of our flesh. And God's final revelation of himself was given-so the New Testament declares-when "the Word became flesh and dwelt among us," in the form of a man who had a body like our own and feelings like our own, and whose mortal life, like ours, ended in death. It is incumbent upon us to take this aspect of the Biblical revelation seriously" (Bright and Kelsey 1967).

By reading the book "The authority of the Old Testament" by John Bright, it can be assumed that the Old Testament is the Word of God, people are led to conclude that the Old Testament is authoritative source (the authority of the Old Testament 1979). Based on the reading by Bright, it is apparent that people cannot be choosy in their approach to the authority of the Old Testament because his ideas are uncertain to any reader to take to heart and believe its validation. Unfortunately, some readers may find this book not satisfying because Bright does not make solid thoughts, which leaves his conclusion to be unconcluded in order to be concrete. Furthermore, if the reader understands Bright's point-of-view with the difficulties in holding to a literal image of Old Testament authority, they will understand his ideas even though his thesis is extremely unclear. Unfortunately, unlike most writers he did not make his readers fulfilled with his ideas, which left them not believing in this book on the Old Testament. This is due to the fact that he asked the really hard questions without following through with clear answers, which does not convince the reader of the ideas, which is something that Bright did not accomplished (the authority of the old testament). Bright's ideas on this theory where he suggests that the Old Testament had no bearing on Christianity is taking the wrong way by readers because his theories are unclear and confusing, which leaves much debate about his validation.