It is purely a matter of interpretation based on your own particular beliefs. Once you have a preconceived notion (that Jesus existed, was the son of God, etc..) then you can read whatever you want into what was written previously and claim them as prophecies. For example, if I believed in the Flying Spaghetti Monster, I could find literally 1000s of prophecies in the bible (Jewish or Christian) or Koran or ancient Aztec writing that refer to the Monster himself.