I understand your frustration...
Perhaps the person who DOES quote a large section IS doing us a favor, though we may not realize it initially. At least they are trying to not simply single out 1 part without showing how it relates to the others.
But I understand that Y!As is supposed to be about short Q&A and not books.
As for your question...
Perhaps so long as you are referencing the entire section which deals with that topic, rather then singling out a single verse. Thus you are showing that verse and the surrounding ones which deal with the same topic.
Perhaps if you consider and refer to the "classic" interpretation of those scriptures.. how MOST Christians and probably even Jewish people (if dealing with the Jewish Bible, AKA OT) have traditionally interpreted those verses or taken them to mean.
Perhaps if you try to consider OTHER verses on that same topic or line of reasoning and not just consider ONLY the author, chapter or verse you are referencing, but instead, attempt to see how that 1 verse works in concert with all the others.
For example, if the verse says "God is a jealous God" -- fine, but what about the other verses that talk about God as well... perhaps, considering ALL the verses about God.. will help you to put the one you are referencing in proper "context"
Perhaps by interpreting the bible as a "compiled text" and realizing that no ONE verse can supersede or override another, since they were compiled together and realizing this.. find a way to interpret them or at least consider them together as "in context" of one another.
Lastly, IDEALLY, not that even I myself can do this.. but ideally, knowing a bit about the culture, the history, the events of those times...the Audience being written to (not modern day people but Corinithians, Philipians, Thesolonians, or even Israelites) and understanding a bit about Koine Greek or even perhaps Hebrew, one can further understand the "context" the verses were written in.
IF one could do ALL that...then they'd be putting these verses in proper "context" I believe, OR, at the VERY least.. be able to SHOW others that they are not taking them entirely OUT OF Context.
You asked how you can avoid someone saying that to ya... I'm simply answering that question.
As a Catholic.. I think the difficulty of this and the fact that despite all this.. people may STILL say that about you.. is a STRONG case AGAINST "sola scriptura" or "bible alone" doctrine which all too often de-evolves into personal interpreting scriptures that the person may not fully understand.