The propehesy in Isiah is only one concerning the messiah how about you get a whole list of the prophesies concerning the messiah and then do some math. What is the probability that all these prophesies over this whole period of time, could ever be filled by the lifetime of one man?
Can I ask you what makes you think that this (Isaiah 7:14) is a Messianic prophecy?
Also, can you prove Jesus fulfilled ANY messianic prophecies?
Without the Bible of course, someone who fulfilled so many prophecies surely wouldn't go unnoticed by contemporary historians.
Brian.
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Remembering events that never happened is a dangerous thing!