What these theologians understand is that the validity of their religion rests upon the legitimacy of the historical claims made in the Bible. Those historical claims can be, and must be, objectively assessed by real scholars, not just by Christian theologians. Just look at Christianity's track record. Literally, Christian scholarship has been wrong about every single objective claim that they've ever made. Christianity is a worldview build on a fundamental misunderstanding of reality and history and is, essentially, wrong about everything, including where the writings of the Bible came from, who wrote them, why they were written, their credibility, and even what they mean.