Nearing the end of this (have to check my list).
It’s time for “when was the book of Revelation written?” The two candidates are, of course, before or after 70 AD (the latter in the 90s). I think the most thorough recent discussion on this is by Greg Beale in his massive commentary on Revelation in the New International Greek Text Commentary. I have attached his discussion here (19 pages). I’ve highlighted a few items under each side that I think are the most important arguments.
I think you’ll see that the question is a toss-up. Like everything else, each side needs to make a couple of assumptions along the way. I’m sure many of you heard in Sunday School (if anyone still does things like book studies in Sunday School) that the book was written in the 90s. Could be. But there’s a lot they don’t tell you in Sunday School.
My opinion is that the evidence for a late date (90s) seems to outweigh the pre-70 AD date. Beale thinks so as well. Note that he’s an “idealist amillennialist,” so don’t conclude that a 90 AD date adds up to a pre-mill argument (something else they may have told you in Sunday School).