Luke 21:20-24 leaves no doubt that it was about A.D 70.
I share this regularly, and surprisingly, I get very little acknowledgment. One creative thinker admitted it was true in Luke 21, but that Matt 24 and Mark 13 told a completely different story. He/she thought that Luke spoke of the historic fulfillment, whereas Matthew and Mark spoke of a future fulfillment, the AoD being the Antichrist.
I see the Abomination of Desolation and the Roman Army being the same, since Luke locates the Roman Army in the exact same place that Matthew and Mark place the AoD. They all indicate that the AoD was fulfilled in 66-70 AD.
None of this means there won't be a future Antichrist--Jesus was just speaking, as a prophet, to his own people at that time, telling them what to expect with the spiritual conditions that existed in Israel at that time. Most would not believe, and would be destroyed or exiled throughout the NT age. The small remnant of believers would initiate the international Church, and would experience persecution in the process. This is oh so clear to me, and yet I get very little acknowledgement--not even recognition that it is a reasonable idea!
Futurists since Irenaeus and Hippolytus want to make the AoD about a future Antichrist. And yet even they recognized, I'm sure, that the Olivet Discourse was speaking of the destruction of Jerusalem in 70 AD.
The only reason the date for the fulfillment of the Olivet Discourse has always confused me and why I have always been prevented from forming a definite opinion on it (either way) is because of the words of Matthew 24:31, compared especially with 1 Corinthians 15:52, but also compared with Revelation 11:15.
We normally get into problems when we try to be too literal with symbolic visions. Rev 11 is a symbolic vision, in my view.
The Olivet Discourse, though speaking of the judgment of Jerusalem in 70 AD, did not deny the reality of a coming Antichrist, nor of a coming of Christ at the end of the age. On the contrary. Jesus simply indicated that the distance of his Return did not stop his 1st Coming from bringing a variety of judgments to nations in the present age--particularly in Israel at that time.
I also have a problem with the idea that the gospel of the Kingdom had been preached in all the world as a witness to all nations (Matthew 24:14) by A.D 70.
The events called "birth pangs" were items that are not limited to that time period before the fall of Jerusalem in 70 AD. Earthquakes and famines have happened in all ages.
What made them "birth pangs" in the context of Jesus' generation was the fact that those things happening in that part of the world at that time were designed as early warning signs of Israel's imminent destruction by the Romans.
Wars and rumors of wars happen in every age, but this particular sign concerned the activities of Roman armies at that time, designed to warn Israel that their destruction was near, due to their lack of repentance. These things would not be "birth pangs" in any other context than the one specifically being referenced by Jesus, namely the fall of Jerusalem.
The "preaching of the Gospel" also takes place throughout the age, and not just in the time before the fall of Jerusalem. But Jesus was referencing the early preaching of the Gospel throughout the world of that time, to warn Jews everywhere of their soon demise.
It did not mean that the Gospel would stop being preached after 70 AD. This message only serves the international Church by providing a warning for other nations, when Christianity had been established in those nations.
I'm hoping someone one day will give me a satisfactory explanation of why Matthew 24:31 fits in with A.D 70. But for now, I want to hear what your explanations is regarding Matthew 24:31.
If it weren't for that one verse, evidence leans in favor of A.D 70 as the fulfillment of the Olivet Discourse.
The reason I focus so much on this is for the same reason you do--I've been bothered for years about some of these issues, and have held a number of these different positions. The key for me was in trying to extract from each position truth that I could live with, even though each position tries to insult another position. The truth must be extracted from several different positions, I think.
I'm called a Preterist, but I am not. But I do find that there is some truth in what Preterists say, and will not deny it. This is actually just historical interpretation--something the Church Fathers did and many Christian scholars throughout the ages.
I can answer every question you may have. Of course, that doesn't mean I'm right. ;) It just means I've asked the questions and am fairly happy with where I've arrived. I'm happy to share the good, the bad, and the ugly!
I can also tell you the most difficult part of my interpretation. It is seeing Jesus speaking of his coming in judgment in 70 AD, while at the same time indicating that he would come at the end of the age.
This seems to indicate that Jesus wanted his Coming to not be something that people can just sit back and not worry about, because it is a long time off. He seemed to indicate that he brings judgment in every generation, even if it is tempered with mercy, and preceded by warning signs.
But I'll leave this discussion for another time. Thanks for being so fair about this! God bless!