While I do agree that the NT is important for understanding the OT, especially against general rabbinical views, I see people using their view of the NT to interpret the OT. The OT has its context and still has to have that context intact even when using the NT background. However, exceptions may occur -- at least we might not understand the NT use of the OT fully (in some situations).
Help me out, mike. Are you Dispensationalist? I ask because Dispensationalism holds a view of Old and New that's much different and where there is some diversity with the rest of Christendom there tends to be a lot more shared views than differing views. If you're Dispensationalist then I can post accordingly, and if not then I can make that adjustment. That said, I doubt many here (at least the ones I know from other forums) will dispute the importance of context. It's inescapable and those who think otherwise aren't worth the attempt at discussing it unless they're open to considering a different point of view. Context is one of the most basic exegetical skills. Unblessedly, some hermeneutics bias the exegesis by assuming a context that's doctrinal, not inherent.
The OT is the context for the NT.
But the NT explains that context, and it does so in ways much different than Judaism thinks.
For example (and I'll try to keep this op-relevant): There's a certain section in
Christendom (not Jews) who think the mention of the word "
Israel" always means the geo-political nation-state Israel but that is not correct. In point of fact, the word "
Israel" was first employed in scripture
centuries before the geo=political nation-state ever existed. When the whole of scripture is read and its entirety gathered together to consider all that is said about "Israel" it is learned there are at least
four definitions of the word. One of them encompasses all the others typologically. So, by the time Paul comes along and writes, "
Not all Israel is Israel,"
that's viewed differently dependent on how one views the whole-scripture definition of the word. It doesn't always help to read the guys with letters after their name. I'm just about finished re-reading the very excellent book, "
Three View on Israel and the Church," and only one of the three theologians (supposed experts) bothered to expound on the verse with any substance and
NONE of them bothered to even mentioned Romans 11:5 except to make mention in passing of a remnant. How does that happen?
Their contexts are eisegetic, not exegetic. Despite each ThD providing something of an exegesis of the Romans 9-11 text, they all did so with doctrinally informed contextual bias and NOT scripture-informed contextual bias
. Not a single one of them provided a whole scripture definition of "Israel," and only two of the three mentioned Jesus is Israel fulfilled. Neither of them gave much of a Christologically informed view of the Romans text. It's still an amazingly informative book. My points are that you're spot on noting the importance of context in understanding the OT and the OT's relationship with the NT, and that observation is not a simple one. Heiser's spent most of his career delving into a very specific aspect of Judaism and teaching about how it informs the OT context. His is just a very thin sliver of context, though.
Most Christians view the chief context of the OT to be the covenant. Dispensationalists will assert the dispensation as preeminent.