For Shugart,
There is a simple observation about the NT that can clear up a lot about relating 1st century Judean events with worldwide events: the worldwide events were indeed expected right after the great revolt in Judea, but with the allowance that there could be a delay.
There is nothing which even hints of a delay concering the events which will happen immediately after the great tribulation is over. Let us review that:
Here we see that signs will be seen in the sky AFTER the great tribulation is over:
"Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken" (Mt.24:29).
And the following passage describes men reacting to those signs in the sky and being in fear of things which will be coming on a much larger area than Israel, and which will take place after the great tribulation is over:
"And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring; Men's hearts failing them for fear, and for looking after those things which are coming on the earth (oikoumene)" (Lk.21:25-26).
There was never a large harvest that happened on a large mass of land after Jerusalem was destroyed in 70 AD.
Well know preterist author Gary DeMar had this to say about the meaning of the Greek word
oikoumene:
"The case can be made that 'oikoumene' is used exclusively for the geographical area generally limited to the Roman empire of the first-century and the territories immediately adjacent which were known and accessible to first-century travelers. When first-century Christians read the word 'oikoumene,' they thought of what they knew of their world" [emphasis mine] (Gary DeMar, "The Gospel Preached to All the World, Part 3 of 4; The Preterist Archive).
There is nothing that even hints of a delay after the end of the great tribulation until the time when men are in fear of the things coming upon an area of land that Christians understood to be their world.
And this is a parallel passage describing the events of Luke 21;25-26:
"...the sun became black as sackcloth of hair, and the moon became as blood; And the stars of heaven fell unto the earth... And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains. And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb: For the great day of his wrath is come; and who shall be able to stand?" (Rev.6:12-17).
From the end of the great tribulation unto these events there is nothing which even hints of a delay of any kind. And since these events did not happen after the destruction of Jerusalem in 70 AD it is clear that all of these prophecies remain in the future.