That's as ignorant a statement as I've seen on FR.
Congratulations, you've shown yourself worthy of DU or KOS.
It is a classic philisophical problem.
How do you bury a prediction so that it doesn’t affect the reality to become a self fullfulling prophecy? One thing you wouldn’t do is publicize it in the documents of an important religion. Science used a double blind experiment to ask such questions.
Like the ‘entering town on a donkey’ prophecy. Apparently there were claimants to that prophecy every few years. Bar Kochba rebellion started that way.
The virgin birth prophecy was a simple mistranslation from young girl in Hebrew to virgin in Greek, and the Hebrew version had been fullfilled already by Hezikiah.