How Do You Justify Calling Jesus the Messiah?

Questions about how one can justify calling Jesus the Messiah when he didn’t fulfill the Hebrew messianic prophecies, and whether the reason for the virgin birth was just to set Jesus apart as unique or there was a deeper meaning.  

• How do you justify calling Jesus the Messiah when he didn’t fulfill the Hebrew prophecies the Messiah was required to complete?
• Is the reason for the virgin birth just to set Jesus apart as unique, or is there a deeper meaning?