If you use that as the litmus test then there are a multitude of stories from the OT that don't hold up to a framework of 'the cross alone is my theology.' We could parse out a majority of the Bible that way.
Each individual piece of scripture must be taken on its own merits. And I'm not talking about Genesis vs Matthew, I'm talking about the individual stories that comprise Genesis and Matthew, etc, etc, etc.
Here is where you and I hold different view points:
I think I am familiar enough with you to say that you view the Bible as The Bible, a book, written by God through the divine inspiration of men who unfailingly wrote his words, to be the fulfilled and complete inerrant history, both salvation and natural, of Creation, that serves to describe the definitive boundary of what is and is not prescribed and proscribed Christian theology and ethic.
All pieces form a whole that cannot be broken or divided without violating the boundaries.
Am I correct and accurate in this?
(BTW: this is meant to be descriptive, not judgemental. Vossler knows that, I just want to be clear that everyone else understands that too. We know we can disagree on this and still be brothers in Christ.)
I view scripture as a collection of stories created over time, written by people who were inspired by the divine and through whose works divine authority speaks to the reader (regardless of time or place), actuated by the indwelling Holy Spirit. I view scripture as primarily literary works that are specific to time, place and culture, that nevertheless convey the divine despite the medium. I view scripture as a collection of stories that suffer from unfortunate formatting that provides the illusion of many pieces being formed into a whole, that is not entirely complete or comprehensive, and certainly does not serve as the definitive boundary for Christian theology or ethic, and that must be reconciled with the other revelations that God provides of himself.
Now, I am sure that not every, and perhaps not any, TE agrees with what I have written, and so in that regard I speak only for myself.
From your point of, if I have accurately captured it, there is no means by which any part of scripture can be individually tested and judged against the cross, as it all serves to point to the cross.
From my point of view the cross was unknown to the OT authors, otherwise scripture would speak differently than it does. Therefore, each individual piece must be judged and the question asked: is this important? And each one us must individually respond to that question, for each of us comes to the cross individually. Not as families, not as churches, not as societies or cultures or ages, but as lowly individuals.