People who believe the Bible contains no errors will have problems defending this belief if they believe that ALL the Bible is scientifically or historically true. The Bible can be wrong in regards to science or history, and still be perfectly true.
In Bible college and seminary, I always found it strange that one of the primary reasons given for divine inspiration and the inerrancy of Scripture was “because the Bible says so.” I always thought…. “Really? We know the Bible is divinely inspired because the Bible says so? We know it is inerrant because it claims to be?” This is not a compelling argument…
My opinion on the JEDP hypothesis are the same as my opinion on the Q theory and the Critical text. I have never completely caught the disease… I try to give biblical authors the same freedom and flexibility I want readers to give me.
The problem with Bibliology (and Systematic Theology in general) is that the questions it asks are loaded questions. There is an agenda behind the theology. The Bibliology I learned in Bible College and Seminary lays some dangerous traps.