some living would not see death before the end came.
He was referring in poetic language to his transfiguration a few days later and possibly about John seeing the realization of the Bible fulfilled when John experienced writing the book of Revelation. Those men experienced it empirically. And don’t forget the realization of the destruction of Jerusalem that just so happened to his contemporaries just as Jesus predicted it would, from his definition of “shikkutz” to the Romans dashing Jewish children to pieces, the destruction of the Temple and more. Very real and I’m convinced.