Historical analysis is not a judgement of truth. It is a judgement of fact, which is expressly different from the concept of truth. Simply because I am interested in exploring the larger historical context of the Bible in order to better understand Jesus, his followers, the community of believers, what they believed, the texts, the authors, etc., is explicitly not the same thing as avoiding its core message. I must reiterate that what you interpret as the core message in scripture is not necessarily the same core message that all other Christians interpret. This is even true today, with each “non-denomination” and denomination having its own emphasis of faith, taking conflicting stances among themselves on matters some find central to their beliefs. For example, how do you feel about the Presbyterian Church (USA)’s stance permitting same-sex marriage and the ordination of members of the LGBTQ community? There is clearly a question here about defiance of Law, as is often cited from the Old Testament. Do you think this means that PC(USA) is an illegitimate form of Christianity?