I do not doubt that Christ predicted the destruction of Jerusalem, but like the OT prophets, NT prophets were not just speaking for their time. The Bible speaks for every generation; even the last one on this earth. As far as I know, we still have an active adversary (not bound or finally judged yet) and the entire world has not been deceived while suffering the horrible events in Rev. Chs. 6 - 20.
I will keep living the way Cjrist has strengthened me to do; living my life so that I will not be ashamed at the instant of his return.
One thing is certain, I am closer to the Judgment Seat of G-d today than I was yesterday.
In essentials, Unity. In non - essentials, Liberty. In all things, Love.