Now that
you’ve earlier acknowledged that the references I cited were showing the infinitive phrase to be epexegetical, and you’ve now defined an epexegetical infinitive as one that is “explanatory — clarifies, specifies, or gives the content of the noun it follows,” the phrase in Heb 3:12 is understood in those same terms:
- Unbelief explained as departing from the living God
- Unbelief clarified as departing from the living God
- Unbelief specified as departing from the living God
- Unbelief having as its content departing from the living God
All four of your own terms point to the same conclusion: the infinitive phrase functions adjectivally, giving the author’s intended sense of “unbelief” in that sentence.
It's saying precisely what I and the references I cited have said. It's not describing a later action, result, or root‑fruit sequence, which would have been stated in entirely different language.
Thus we can say disobedience–unbelief or obedience–belief, with the hyphen indicating the Hebrews author’s own parallel usage and not lexical definition as you keep asserting I’m saying, but simply showing that the two terms belong together as one unified concept. The hyphen doesn’t mean the words are identical. It just shows they function together and should be read as a single, connected idea rather than as separate or sequential categories.
Faith-Obedience, just as is conveyed in several other areas of Scripture.