More On Matthew 24:34
It's seldom noticed that the Greek text of Matthew 24:34 uses a grammatical form called the ingressive aorist. Taken literally, this means Jesus DID NOT SAY the generation He was speaking to would live to see all that He said come true. But that they (or their nation) would not pass away until it all started to come true. When understood this way, His words were fulfilled to the letter, because the first thing He spoke of was the destruction of the city and temple. And whether He was speaking of the generation then living, or of the Jewish people, His words were true. In fact, in the parallel passage in Luke 21, He speaks of the whole nation being again taken into captivity, being scattered among the nations, and Jerusalem being "trodden down by the nations until the times of the nations are fulfilled." From this it seems He would almost have to be speaking of a process that only began in the first century. And this is exactly how one of the earliest Church commentators understood the prophesy. He wrote "...prophesying concerning the temple, He said: 'See ye these buildings? Verily I say to you, There shall not be left here one stone upon another which shall not be taken away; and this generation shall not pass until the destruction begin."
(Clementine Homilies, Homily III, Chapter XV.)
Note: And the Wailing Wall, which was part of the Jewish Temple in Christ's day, stands as a witness that the judgement Jesus spoke of was only begun in the first century.
Will The Church Triumphant Reign on Earth (prior to the 2nd Coming, as the 20th chapter of Revelation seems to suggest)?
"There is a legitimate hope for an age of the Spirit within history, prior to the eschaton, in which the Church manifests more fully the 'form' of Christ."
Hans Urst Von Balthasar (Theo-Drama:Theological Dramatic Theory," Vol. V: The Last Act, Ignatius Press, 1998, page 85)
"This is a theologoumenon (acceptable theological opinion), not a doctrine. It cannot be the object of preaching as if it were certain.
Von Balthasar, Ibid., page 91 (parenthesis mine.)