The division of the Bible into the two familiar portions, Old and New Testaments, presents a challenge to any Bible student. What if anything in the Old Testament should be carried over and applied in the New. Many Christian teachers routinely refer to the Old Testament scriptures to support their current day theology and practice. Other such teachers seem to dismiss the Old Testament as out-dated and being superseded by the New Testament scriptures. All groups place great emphasis on certain passages and largely or completely ignore others, in both the Old and New Testament books.
I suspect that the man made division of the Bible into two such sections is vastly misleading to both groups above. One assumes a new context for the so called New Testament books but carry over selected Old Testament practices into their perception of newness, mixing old and new alike. The second group sees such a marked contrast between Old and New that they focus exclusively on what the NT says and base their theology on that alone.
In reality, I suspect that the entire Bible from Genesis to Revelation is OT in nature. It is all about God working through