Truth_b_known, those around him did see him in kingdom glory. It's called the transfiguration. Its importance is suggested by the fact that it appears at length in each of the Synoptics:
Matthew 16:27–17:13; Mark 9:1–13; Luke 9:27–36. The entire picture can be seen only as all three accounts are diligently compared. In all, thirty-eight verses of the Sacred Text are assigned to the description of this event; added to these are the three verses of 2 Peter 1:16–18, in which portion the divine interpretation is revealed.
Lenski is correct that “all these things” (Matt. 24:33) refers to the preceding context beginning in Matthew 24:3.1) More specifically, it points to the Great Tribulation, and the appearance of the two prophets, as a specific sign of the end of the present system. Therefore the “generation” referred to in Matthew 24:34 is the generation who will see the Great Tribulation, and not the generation living during Jesus’ first advent. 2)
So in Matt.24:34 one must establish to whom is he referring, to those of his generation or to those that will witness the great tribulation (Matt. 24:20-22, 32). Jesus is here using the fig tree as a natural illustration and not as a typical one. In other words, just as a budding fig tree is a sign that summer is near, so the Great Tribulation itself is a sign of the end of the age.
1) R. C. H. Lenski, The Interpretation of St. Matthew’s Gospel (Minneapolis, 1943), p. 951.
2) J. F. Walvoord (1972). “Christ’s Olivet Discourse on the Time of the End.” Bibliotheca Sacra, 129, pp. 20–23.
Peacefulpete, I believe John of Patmos was the writer. I have no reason to doubt the authenticity of the book.