"And it shall be that every soul who will not hear that Prophet shall be utterly destroyed from among the people."
Most verses like this, I believe, are easily explained by knowing the difference between aion, etc, and 'forever'.. And some of course, is in the Greek in other ways.
But this one, I'm wondering if it might not be that it is truly the very real potential. In the 'end' if there's a soul (psyche) "who will not hear that Prophet" they shall indeed "be utterly destroyed from among the people".
But! ....All will come to believe and "hear".. Once one is free to take into account all pertaining scriptures and the overall BiG picture, this seems to be the logical meaning.