This has interested me for a few years now, I ask - How do we know Jesus existed? Just because an old book (collection of books), says something doesn't mean it's true, does it?
When Jesus speaks of future events (such as pollution and sea-level rise—Revelation 11:18; Luke 21:25) it comes true.
I'd be interested to know how you come to this conclusion. The verses seem rather vague. Don't you agree?