I didn’t have Heb 2 particularly in mind; but yes, that’s an example of the already/not-yet concept. (Good literal translation there, btw!)
I’ve got the article compiled now, but for topicality’s sake I want to leave room a while for more people to state, and discuss, what they find (and so believe) to be the fundamental concept of justification.
As a line of thought to how I would answer that question myself (which I hope to do later): what does justification have to do with justice?
The words in Greek are even more closely related than in English, by the way:
just (adjective) == dikaion (often translated as “righteous”)
fair (adjective) == endikon (in-just)
justification (noun) == dikaioma (just-effect; occasionally translated as “righteousness”)
just verdict (noun) == hupodikos (under-just)
justice (noun) == dike
justify (verb) == dikaioo (sometimes also translated as justification; grammatically modified to Justifier a couple of times as a name-title for God)
justifying == dikaiosis
justly (adverb) == dikaios (translated as “righteousness” at least once)
fair-togetherness == dikaiosune (just-togetherness; the most common term translated to “righteousness”)
I haven’t yet noticed anything about justice per se in the preceding comments about the most fundamental meaning of justification (though Aaron seems to be close to that–he posted while I was composing ) Would anyone care to rephrase or add in light of that? And/or in relation to “righteousness” (which I see mentioned several times)?