I'm not advocating that the writer was ambiguous or uncertain in his use of the word. My entire point is that given the author uses the words inconsistently, AND further provides no accompanying clarification for the shift in meanings, interpreters of the words should not try to find theological precision where none clearly exists. That the author meant "something" is obvious, but the meaningfulness of this particular word within it is subsumed within the larger intention of the writing in the first place.
And that, particularly, is the error of systematicians (or those who advocate their systems, at least) in searching out the theological significance of individual words while definitively ignoring what the author was trying to accomplish by the act of writing.
That's not the case, though. If you were to read many of these guys, you'd find they're supporting their case by
involving the course of the argument in their systematic conclusions. They're not pulling prooftexts out of thin air, but in fact they refer to a body of work that points to the relevance of the texts to the subject at hand. Footnotes and references draw on this.
For instance, to say that "propitiation" here doesn't refer to something soteriological would be absurd -- although the word's very rare in the New Testament. Most systematic theologians don't even begin to take on that argument.
But many do point out that "propitiation"
proves too much if John were using this term to refer to actually propitiating for each individual human ever in the world. The result is universalism. There's no clear reason to make that conclusion, and there are a variety of
systematic reasons not to. So they don't draw that conclusion.
This is comparing apples and oranges.
No, it's not. If John meant something ambiguous, there would indeed be a reason to think that the Apostles were not clear with one another on what they were teaching.
That the apostles agreed on the fundamental principles of the gospel is, I think, easy enough to affirm.
I'd have to point out that the fundamental operative principle of the gospel is justification by faith, not will nor action. It's so important Paul emphasizes it again and again. In other words, we
are talking about a fundamental principle of the gospel. If there were no agreement over this, then Judaizing would be
fine. Yet it receives the worst of condemnations among the Apostles.
However, that their theological and philosophical understanding--much less expression--of the same is consistent or univocal is, I would argue, much more difficult to prove and, alternatively, much easier to disprove (e.g., Paul's admitted disputes with others in the theological/political leadership of the early Christian movement, the Petrine complaints of Pauline incoherence, etc.).
So to clarify, your position is that they are
inconsistent with one another? That is, not simply that their perspectives are different and their expressions are different, but they
intended to mean different things?
My position, for the record, is that they certainly saw things differently, but made strong and serious efforts to harmonize their views with one another, and agreed on more than just the Resurrection, they agreed by and large on the operation of the Holy Spirit, the purpose and implementation of the gospel, the deity of Christ at a time when such would be highly suspect to their own origins ... quite a number of points which couldn't be abandoned. The level of detail they disagreed on could readily be revealed -- but it's submerged under such ambiguities of expression that to identify an unambiguous
disagreement would actually be the tougher linguistic challenge.
I'm not claiming propositional conformity nor uniformity of expression. They may well see the same things, while working from different perspectives. They're not identical in experience, no. And they're limited human beings. To me the disputes between human beings are demonstrably different views,
especially those between Peter and Paul. Peter's complaint appears to be about "the unstable and twisted", not particularly about Paul. Paul's complaint is from observing the impact of Peter's behavior.
However, what they're looking at is either the same thing, or it's bunk.
This is fine and well, and if such self-awareness is in abundance, these individuals are to be applauded. However, what should also be understood completely is that in the place of contextually relevant biblical material, the next (or perhaps first...) recourse of the systematician must be philosophy. It is precisely at this point, in my experience, that proof-texting begins to appear, for in the absence of biblical support, the fundamental philosophical prejudices must be supported (this is human nature, after all), and pressing Scripture to this end is an attractive avenue, given the authority which such a source holds in the minds of most of the systematician's audience.
Well, the next recourse of evidence is the next less specific context. For instance, if I were to make a claim about Romans 9 based on my 21st century philosophy to deny Paul was saying what he was saying prima facie, that'd be similar to the prooftexting you're claiming for systematicians. However, if drew from Romans 8, not so. If I drew from
First Century philosophy or Hebrew theology, not so.
As for the the systematist prooftexting his own theology, well, it's certainly possible, but that wouldn't explain for instance why I grew up a Methodist and now I'm a Presbyterian. Making the assertion without evidence would be muckraking. It doesn't really permit us to simply pass off an answer to prooftexting. We'd need to have evidence of the point.