"I would say that scripture teaches a second coming ("the Parousia") and that that "appearing" coincided with the destruction of Jerusalem and the temple, just as Jesus taught in the Olivet Discourse. I cannot find where the Scriptures teach a future-to-us "Third Coming"."
Well, I guess that settles it, move along folks, nothing more to look forward to or hope for. This is all there is, but boy, did he leave a mess when He came the last time.
Anyone who tells you Christ already returned is simply wrong. This world is just too messed up for that to have occured.